Tax distributions to members Payments of Distributions to Affiliates Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] Refund assets Contract with Customer, Asset, after Allowance for Credit Loss, Current Additional Lease Information Lease, Cost [Table Text Block] Brilliant Earth Group, Inc. expected tax expense at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Cover [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Schedule of Future Minimum Lease Payments Under Long-term Non-cancelable Operating Leases Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Trading Symbol Trading Symbol All Trading Arrangements All Trading Arrangements [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Non-NEOs Non-NEOs [Member] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Tax benefit from share-based compensation expense Share-Based Payment Arrangement, Expense, Tax Benefit Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Cash paid for taxes Income Taxes Paid, Net Class A Common Stock Common Class A [Member] Conversion of Class B and Class C to Class A common stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Jennifer Harris [Member] Jennifer Harris BUSINESS AND ORGANIZATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Operating lease liabilities Increase (Decrease) in Operating Lease Liability Inventories, Net Inventory, Policy [Policy Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] RSU vesting during period (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Mainsail Entities [Member] Mainsail Entities Award Timing Disclosures [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount LEASES Lessee, Operating Leases [Text Block] Common stock, shares outstanding (in shares) Stockholders' equity, beginning balance (in shares) Stockholders' equity, ending balance (in shares) Common Stock, Shares, Outstanding Rebalancing of controlling and non-controlling interest Noncontrolling Interest, Increase (Decrease) From Rebalancing Noncontrolling Interest, Increase (Decrease) From Rebalancing Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Operating lease costs Operating Lease, Cost Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Operating lease liabilities Operating Lease, Liability, Noncurrent Quarterly payment percent, period two Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period Two Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period Two Options unvested, weighted average grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Grant Date Fair Value Deferred revenue Contract with Customer, Liability, Current Plan Name [Domain] Plan Name [Domain] United States UNITED STATES Dilutive effects (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Other assets Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number Unvested LLC Units LLC Units Vested [Member] LLC Units Vested Leases [Abstract] Schedule of Long-term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Common LLC Units issued (in shares) Common Unit, Issued General and administrative expense Selling, General and Administrative Expenses [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Treasury Stock Treasury Stock, Common [Member] Secured Debt Secured Debt [Member] Deferred tax assets, operating loss carryforwards, state and local Deferred Tax Assets, Operating Loss Carryforwards, State and Local Plan Name [Axis] Plan Name [Axis] Equity Components [Axis] Equity Components [Axis] Distributions to Members Incentive Distribution Policy, Managing Member or General Partner, Description [Policy Text Block] Award Timing Method Award Timing Method [Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Return period Contract With Customer, Return Period Contract With Customer, Return Period Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Insider Trading Policies and Procedures [Line Items] Loss from step up in outside basis Effective Income Tax Rate Reconciliation, Step Up in Outside Basis Effective Income Tax Rate Reconciliation, Step Up in Outside Basis Use of Estimates Use of Estimates, Policy [Policy Text Block] Outside basis difference in investment Deferred Tax Assets, Step Up in Outside Basis Difference Deferred Tax Assets, Step Up in Outside Basis Difference Tax distributions to members Limited Liability Company (LLC) Members' Equity, Tax Distributions To Members Limited Liability Company (LLC) Members' Equity, Tax Distributions To Members Adjustment to Compensation, Amount Adjustment to Compensation Amount Payables and Accruals [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Change to APIC related to redemption of LLC Units Credit To Additional Paid In Capital Related To Redemption Of Units Credit To Additional Paid In Capital Related To Redemption Of Units Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Provision for sales returns and allowances Balance at beginning of period Balance at end of period Contract with Customer, Refund Liability, Current Entity Small Business Entity Small Business Add: Net income impact from assumed redemption of all LLC Units to common stock Net Income (Loss) From Impact of Assumed Redemption of All LLC Units To Common Stock Net Income (Loss) From Impact of Assumed Redemption of All LLC Units To Common Stock Company Selected Measure Amount Company Selected Measure Amount Geographical [Axis] Geographical [Axis] Payments of debt issuance costs Payments of Debt Issuance Costs Tabular List, Table Tabular List [Table Text Block] Net deferred tax asset Deferred Tax Assets, Net 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five Net of accumulated amortization Accumulated Amortization, Debt Issuance Costs, Noncurrent Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Schedule of Stock Options Roll Forward Schedule of Stock Options Roll Forward [Table Text Block] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Payable pursuant to the Tax Receivable Agreement Accrued Income Taxes, Noncurrent Accrued expenses and other current liabilities Total accrued expenses and other current liabilities Accrued Liabilities, Current Antidilutive securities excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Consolidated total leverage ratio Debt Instrument, Covenant Compliance, Consolidated Total Leverage Ratio, Percent Debt Instrument, Covenant Compliance, Consolidated Total Leverage Ratio, Percent Share-based Payment Arrangement, Tranche One Share-Based Payment Arrangement, Tranche One [Member] Class C Common Stock Common Class C [Member] Cost of Sales Cost of Goods and Service [Policy Text Block] Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of year Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Current portion of TRA Current Portion Of TRA Current Portion Of TRA Quarterly payment percent, period one Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period One Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period One Current assets: Assets, Current [Abstract] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount INVENTORIES, NET Inventory Disclosure [Text Block] Treasury stock, shares outstanding (in shares) Treasury Stock, Common, Shares Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount 2026 Recorded Unconditional Purchase Obligation, to be Paid, Year Two Stock options Share-Based Payment Arrangement, Option [Member] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Depreciation Depreciation 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Common Class B And Class C Common Class B And Class C [Member] Common Class B And Class C Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Security Exchange Name Security Exchange Name Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Award Type [Axis] Award Type [Axis] Temporary increase to the consolidated borrower leverage ratio Debt Instrument, Covenant Compliance, Consolidated Borrower Leverage Ratio, Percent Debt Instrument, Covenant Compliance, Consolidated Borrower Leverage Ratio, Percent Inventory, gross Inventory, Gross Number of Restricted Stock Units Number of LLC Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Property and equipment, net Total property and equipment, net Property, Plant and Equipment, Net ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag State Current State and Local Tax Expense (Benefit) Total liabilities Liabilities Non-controlling interests attributable to Brilliant Earth, LLC Equity, Attributable to Noncontrolling Interest Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Options exercisable, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Common stock, par or stated value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Foreign Currency Transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Expiration Date Trading Arrangement Expiration Date Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Third-party extended service plan period Contract With Customer, Third-Party Extended Service Plan Period Contract With Customer, Third-Party Extended Service Plan Period Current portion of operating lease liabilities Less: current portion Less: current portion Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Deferred issuance costs long-term debt Debt Issuance Costs, Noncurrent, Net Common stock, shares issued (in shares) Common Stock, Shares, Issued Tax effect Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Schedule of Activity Related to the Unvested LLC Units Nonvested Restricted Stock Shares Activity [Table Text Block] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Supplemental cash flow information related to operating leases is as follows: Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability Concentration risk, percentage Concentration Risk, Percentage Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Computer equipment Computer Equipment [Member] Equipment Equipment [Member] Long-term Purchase Commitment, Category of Item Purchased [Domain] Long-Term Purchase Commitment, Category of Item Purchased [Domain] Conversion ratio Conversion Of Stock Awards, Conversion Ratio Conversion Of Stock Awards, Conversion Ratio Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Gross property and equipment Property, Plant and Equipment, Gross Two Customers Two Customers [Member] Two Customers Debt Instrument [Line Items] Debt Instrument [Line Items] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Weighted average exercise price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Diluted (in shares) Weighted average shares of common stock outstanding, DILUTED (in shares) Weighted Average Number of Shares Outstanding, Diluted Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less Portion Attributed To Temporary Equity Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less Portion Attributed To Temporary Equity One Customer One Customer [Member] One Customer MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Stockholders' equity attributable to Brilliant Earth Group, Inc. Equity, Attributable to Parent Entity Voluntary Filers Entity Voluntary Filers Liabilities Operating Lease, Liability [Abstract] Interest expense Interest Expense, Nonoperating Deferred tax expense (benefit) Total deferred income tax benefit Deferred Income Tax Expense (Benefit) PROPERTY AND EQUIPMENT, NET Property, Plant and Equipment Disclosure [Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Letter of credit Letters of Credit Outstanding, Amount Category of Item Purchased [Axis] Category of Item Purchased [Axis] Defined contribution plan, cost Defined Contribution Plan, Cost Stock Conversion Description [Axis] Stock Conversion Description [Axis] Cost of sales Cost of Sales [Member] Amortization expense Hosting Arrangement, Service Contract, Implementation Cost, Expense, Amortization Noncontrolling interest, ownership percentage Subsidiary, Ownership Percentage, Parent Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Net carrying amount Long-Term Debt Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Document Fiscal Period Focus Document Fiscal Period Focus All Executive Categories All Executive Categories [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Assets Assets [Abstract] Restricted cash Restricted Cash, Current Document Type Document Type Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Document Annual Report Document Annual Report Weighted average remaining contractual term, Unvested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Stockholders’ Equity Parent [Member] Inventory, Current [Table] Inventory, Current [Table] Assets Assets and Liabilities, Lessee [Abstract] Maximum Maximum [Member] Remaining sublease term Lessor, Sublease, Remaining Lease Term Lessor, Sublease, Remaining Lease Term Deferred revenue Contract with Customer, Liability Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Furniture and fixtures Furniture and Fixtures [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] International Non-US [Member] Accounts payable Accounts Payable, Current Accounting Policies [Abstract] Leasehold improvements Leasehold Improvements [Member] Total Operating Lease ROU Assets and Lease Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Capitalized implementation costs Capitalized Contract Cost, Gross Current Fiscal Year End Date Current Fiscal Year End Date Annual adjustment percent Debt Instrument, Annual Adjustment, Percent Debt Instrument, Annual Adjustment, Percent Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Outside basis movement Effective Income Tax Rate Reconciliation, Outside Basis Movement Effective Income Tax Rate Reconciliation, Outside Basis Movement Total lease costs Lease, Cost Statistical Measurement [Axis] Statistical Measurement [Axis] PEO Name PEO Name Pre-tax earnings of Brilliant Earth Group, Inc. Income (Loss) from Continuing Operations before Income Taxes Income (Loss) from Continuing Operations before Income Taxes Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income tax (expense) benefit Pre-tax earnings of the Company Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Long term outstanding principal Long Term Debt, Excluding Current Maturities, Gross Long Term Debt, Excluding Current Maturities, Gross Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Vesting [Axis] Vesting [Axis] Award Type [Domain] Award Type [Domain] Name Outstanding Recovery, Individual Name Capital commitment Long-Term Purchase Commitment, Amount Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Variable lease costs Variable Lease, Cost Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Money market fund accounts included in cash equivalents Money Market Funds, at Carrying Value Deferred tax assets Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Net increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Additional Paid-In Capital Additional Paid-in Capital [Member] Deferred tax assets associated with redemption of LLC Units Deferred Tax Assets Associated With Redemption Of Units Deferred Tax Assets Associated With Redemption Of Units Award Timing Predetermined Award Timing Predetermined [Flag] Class of Stock [Line Items] Class of Stock [Line Items] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] 2021 Incentive Award Plan 2021 Incentive Award Plan [Member] 2021 Incentive Award Plan DEBT Long-Term Debt [Text Block] Diluted (in dollars per share) DILUTED earnings per share (in dollars per share) Earnings Per Share, Diluted Class of Stock [Axis] Class of Stock [Axis] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Non-cash operating lease cost Operating Lease, Right-of-Use Asset, Periodic Reduction Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Deferred revenue Increase (Decrease) in Contract with Customer, Liability Total current income tax expense Current Income Tax Expense (Benefit) Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Weighted average remaining contractual term, vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Ownership [Axis] Ownership [Axis] Auditor [Abstract] Auditor [Abstract] Award vesting rights, percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Number of operating segments Number of Operating Segments Foreign currency transactions Gain (Loss), Foreign Currency Transaction, before Tax Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Customer [Axis] Customer [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Outstanding as of December 31, 2021 (in dollars per share) Outstanding as of December 31, 2022 (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Deferred issuance costs Debt Issuance Costs, Current, Net Equity-based compensation Share-Based Payment Arrangement, Noncash Expense Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Income tax (expense) benefit Income tax (expense) benefit of Brilliant Earth Group, Inc. Income tax (expense) benefit Income Tax Expense (Benefit) Loss from step up in outside basis Effective Income Tax Rate Reconciliation, Step Up in Outside Basis, Percent Effective Income Tax Rate Reconciliation, Step Up in Outside Basis, Percent Outstanding principal Recorded Unconditional Purchase Obligation Cost not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Net income attributable to Brilliant Earth Group, Inc., after adjustment for assumed conversion, DILUTED Net Income (Loss) Available to Common Stockholders, Diluted Net sales Total net sales Revenue from Contract with Customer, Excluding Assessed Tax Deferred tax assets Deferred Tax Assets, Tax Deferred Expense Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Change in allowance for inventory obsolescence Inventory Write-down Options, Vested and Expected to Vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest [Abstract] Auditor Firm ID Auditor Firm ID Income tax expense (benefit) at effective rate Effective Income Tax Rate Reconciliation, Percent Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Income from operations Operating Income (Loss) Inventories Inventories [Member] Variable Rate [Domain] Variable Rate [Domain] Number of reportable segments Number of Reportable Segments Total liabilities and stockholders' equity Liabilities and Equity Other Other Operating Activities, Cash Flow Statement Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] All Adjustments to Compensation All Adjustments to Compensation [Member] Payroll expenses Employee-related Liabilities, Current Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Additional paid-in capital Additional Paid in Capital Noncontrolling Interest [Table] Noncontrolling Interest [Table] Commitments and Contingencies Disclosure [Abstract] Capitalized Contract Cost Capitalized Contract Cost [Table Text Block] Less: Income tax expense on net income attributable to NCI Income Tax Expense (Benefit), Portion Attributable To Noncontrolling Interest Income Tax Expense (Benefit), Portion Attributable To Noncontrolling Interest Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Underlying Security Market Price Change Underlying Security Market Price Change, Percent Individual: Individual [Axis] RSU vesting during period Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Future minimum tenant operating Receipts remaining under sublease Lessor, Operating Lease, Payment to be Received Forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Silicon Valley Bank Credit Agreement Silicon Valley Bank Credit Agreement [Member] Silicon Valley Bank Credit Agreement Restricted cash Restricted Cash Inventories, net Total inventories, net Inventory, Net Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity Address, State or Province Entity Address, State or Province Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Statement [Line Items] Statement [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Recorded Unconditional Purchase Obligations Recorded Unconditional Purchase Obligations [Table Text Block] 2025 Recorded Unconditional Purchase Obligation, to be Paid, Year One Inventory [Domain] Inventory [Domain] Brilliant Earth, LLC Brilliant Earth, LLC [Member] Brilliant Earth, LLC Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Sublease income Sublease Income TRA Obligation associated with redemption of LLC Units Tax Receivable Agreement Obligation Associated With Redemption Of Units Tax Receivable Agreement Obligation Associated With Redemption Of Units Vesting [Domain] Vesting [Domain] Fair value per unit (in dollars per share) Unvested beginning balance (in dollars per share) Unvested ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Liabilities and stockholders' equity Liabilities and Equity [Abstract] Software Software Development [Member] Minimum Minimum [Member] Restatement Determination Date Restatement Determination Date Options, vested and expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Number of locations Number of Showrooms Number of Showrooms Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Marketing and advertising Marketing and Advertising Expense Outstanding as of December 31, 2021 (in dollars per share) Outstanding as of December 31, 2022 (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease right of use assets Net book value Operating Lease, Right-of-Use Asset Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Outstanding as of December 31, 2022 (in shares) Outstanding as of December 31, 2023 (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Class B shares issued upon vesting of LLC units (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Brilliant Earth Group, Inc. expected tax expense at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Inventory [Line Items] Inventory [Line Items] Property, Plant and Equipment [Abstract] Outstanding principal Outstanding principal Long-Term Debt, Gross Exercise Price Award Exercise Price Conversion of LLC Units LLC Units Converted [Member] LLC Units Converted Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] EARNINGS PER SHARE Earnings Per Share [Text Block] Arrangement Duration Trading Arrangement Duration Operating expenses: Costs and Expenses [Abstract] Inventory [Axis] Inventory [Axis] Stockholders’ equity Equity, Attributable to Parent [Abstract] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Returns and allowances Contract with Customer, Refund Liability, Returns And Allowances Contract with Customer, Refund Liability, Returns And Allowances Income Taxes Income Tax, Policy [Policy Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Interest income Interest and Other Income Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Income from investee per K-1 (inside basis difference) Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent All Individuals All Individuals [Member] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] PEO PEO [Member] Variable Rate [Axis] Variable Rate [Axis] Income Tax Disclosure [Abstract] Name Trading Arrangement, Individual Name Other income, net Other Nonoperating Income (Expense) Statement of Stockholders' Equity [Abstract] Weighted average grant date fair value per option Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Entity Public Float Entity Public Float Other assets Increase (Decrease) in Other Noncurrent Assets Unamortized compensation cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Treasury stock, at cost; 281,981 shares and none at December 31, 2024 and 2023, respectively Treasury Stock, Common, Value Commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Outside basis movement Effective Income Tax Rate Reconciliation, Outside Basis Movement, Percent Effective Income Tax Rate Reconciliation, Outside Basis Movement, Percent Common stock reserved for issuances (in shares) Common Stock, Capital Shares Reserved for Future Issuance Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fine jewelry and other Fine Jewelry And Other [Member] Fine Jewelry And Other Income from investee per K-1 (inside basis difference) Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount Temporary increase to the consolidated borrower leverage ratio Debt Instrument, Covenant Compliance, Consolidated Borrower Leverage Ratio, Temporary Increased Amount, Percent Debt Instrument, Covenant Compliance, Consolidated Borrower Leverage Ratio, Temporary Increased Amount, Percent Capitalized cost written off Capitalized Contract Cost, Impairment Loss Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Long-term Purchase Commitment [Line Items] Long-Term Purchase Commitment [Line Items] Local Phone Number Local Phone Number Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Total operating expenses Operating Expenses Repurchases of common stock (in shares) Stock Repurchased During Period, Shares Weighted average remaining contractual term (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] PEO Total Compensation Amount PEO Total Compensation Amount Federal Deferred Federal Income Tax Expense (Benefit) Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Schedule of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Axis] Entity Ex Transition Period Entity Ex Transition Period Vested and expected to vest, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Cash and Cash Equivalents, and Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Impairment losses Impairment, Long-Lived Asset, Held-for-Use Common Stock Common Stock [Member] Measure: Measure [Axis] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Line of Credit Line of Credit [Member] Entity Emerging Growth Company Entity Emerging Growth Company Segment Reporting [Abstract] Tax distributions and TRA payments to members Payments of Distributions and TRA Payments to Affiliates Payments of Distributions and TRA Payments to Affiliates Entity Central Index Key Entity Central Index Key Class D Common Stock Common Class D [Member] Common Class D General and administrative expense General and Administrative Expense [Member] Schedule of Inventories, Net Schedule of Inventory, Current [Table Text Block] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Increase in number of shares available for grant, percentage of shares outstanding Share-based Compensation Arrangement by Share-based Payment Award, Increase In Number Of Shares Available For Grant, Percentage Of Shares Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Increase In Number Of Shares Available For Grant, Percentage Of Shares Outstanding Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Loose diamonds Loose Diamonds [Member] Loose Diamonds Schedule of Accrued Expenses And Other Current Liabilities Provision For Sales Returns Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] STOCKHOLDERS’ EQUITY AND MEMBERS UNITS Equity [Text Block] Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Forfeited, Weighted Average Grant Date Fair Value Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par or stated value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Current portion of long-term debt Current portion Long-Term Debt, Current Maturities Operating lease not yet commenced term of contract (in years) Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Contract with Customer, Refund Liability [Roll Forward] Contract with Customer, Refund Liability [Roll Forward] Contract with Customer, Refund Liability Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Economic interest percent Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Equity-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company 2027 Recorded Unconditional Purchase Obligation, to be Paid, Year Three Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Cloud computing arrangements, net Capitalized Contract Cost, Net Class B Common Stock Common Class B [Member] Title Trading Arrangement, Individual Title Consigned inventory Inventory, Consigned Inventory Inventory, Consigned Inventory Less: accumulated amortization Capitalized Contract Cost, Accumulated Amortization Statement [Table] Statement [Table] Brilliant Earth Group, Inc. level pre-tax loss as adjusted for tax Effective Income Tax Rate Reconciliation, Pre-Tax Income (Loss) From Continuing Operations Effective Income Tax Rate Reconciliation, Pre-Tax Income (Loss) From Continuing Operations Interest expense, debt Interest Expense, Debt City Area Code City Area Code Current liabilities: Liabilities, Current [Abstract] Auditor Location Auditor Location Common LLC Units outstanding (in shares) Common Unit, Outstanding Resizing period Contract With Customer, Resizing Period Contract With Customer, Resizing Period Options vested and expected to vest, weighted average grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Grant Date Fair Value Inventory Valuation Reserves [Roll Forward] Inventory Valuation Reserves [Roll Forward] Inventory Valuation Reserves Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Just Rocks [Member] Just Rocks Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Schedule of Earnings Used To Compute Income Taxes Earnings Used To Compute Income Taxes [Table Text Block] Earnings Used To Compute Income Taxes Total current assets Assets, Current Statement of Cash Flows [Abstract] Non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] Accounts payable, accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Repurchases of common stock Payments for Repurchase of Common Stock Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number 2027 Long-Term Debt, Maturity, Year Three Document Information [Line Items] Document Information [Line Items] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Long-term debt, net of debt issuance costs Long term net carrying amount Long-Term Debt, Excluding Current Maturities Weighted average
grant date fair value per unit Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Amount of operating lease not yet commenced Unrecorded Unconditional Purchase Obligation Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Accumulated amortization Accumulated Amortization, Debt Issuance Costs INCOME TAXES AND TAX RECEIVABLE AGREEMENT Income Tax Disclosure [Text Block] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Vendor expenses Accrued Vendor Expenses, Current Accrued Vendor Expenses, Current Earnings per share: Earnings Per Share [Abstract] Equity [Abstract] Capital Addition Purchase Commitments Capital Addition Purchase Commitments [Member] Sales and other tax payable Accrual for Taxes Other than Income Taxes, Current Retained earnings Retained Earnings (Accumulated Deficit) Quarterly payment percent, period three Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period Three Line of Credit Facility, Periodic Payment, Quarterly Payment, Percent, Period Three Schedule of Nonvested Share Activity Schedule of Nonvested Share Activity [Table Text Block] Class of Stock [Domain] Class of Stock [Domain] Inventories Increase (Decrease) in Inventories Supplemental information Supplemental Cash Flow Elements [Abstract] General and administrative General and Administrative Expense 2026 Long-Term Debt, Maturity, Year Two Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Debt Issuance Costs Debt, Policy [Policy Text Block] Equity Awards Adjustments Equity Awards Adjustments [Member] Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Net present value of operating lease liabilities Net present value of operating lease liabilities Operating Lease, Liability Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Class M Units Class M Units [Member] Class M Units Conversion of Stock, Name [Domain] Conversion of Stock, Name [Domain] Amendment Flag Amendment Flag Less: equity interest in earnings of subsidiary not taxable (permanent difference) Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount Entity Registrant Name Entity Registrant Name Accumulated amortization Operating Lease, Right-of-Use Asset, Accumulated Amortization Operating Lease, Right-of-Use Asset, Accumulated Amortization Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Options unvested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Nonvested, Number Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Gross profit Gross Profit Tax benefit distributions to noncontrolling interest holders, percent Noncontrolling Interest, Tax Benefit Distributions To Noncontrolling Interest Holders, Percent Noncontrolling Interest, Tax Benefit Distributions To Noncontrolling Interest Holders, Percent Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] State Deferred State and Local Income Tax Expense (Benefit) Fair Value as of Grant Date Award Grant Date Fair Value Operating Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Debt issuance costs Debt Issuance Costs, Net Geographical [Domain] Geographical [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Debt instrument, face amount Debt Instrument, Face Amount Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Class B shares issued upon vesting of LLC Units Shares Issued, Value, Share-Based Payment Arrangement, before Forfeiture Entity Address, Postal Zip Code Entity Address, Postal Zip Code Principles of Consolidation and Non-Controlling Interest Consolidation, Policy [Policy Text Block] Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Common stock, value, issued Common Stock, Value, Issued Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Share-Based Payment Arrangement [Abstract] Interest rate during period Debt Instrument, Interest Rate During Period Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Options exercisable, weighted average grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Grant Date Fair Value Maximum shares issued upon exercise (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Maximum Shares Issued Upon Exercise Share-based Compensation Arrangement by Share-based Payment Award, Maximum Shares Issued Upon Exercise Software Development and Website Software Development and Website [Member] Software Development and Website Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Provision Contract with Customer, Refund Liability, Provision Contract with Customer, Refund Liability, Provision Auditor Firm Name Auditor Name Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Current tax expense Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Preferred stock, $0.0001 par value per share, 10,000,000 shares authorized, none issued and outstanding at December 31, 2024 and 2023, respectively Preferred Stock, Value, Issued Unvested LLC Units that are exchangeable for common stock Share-Based Payment Arrangement [Member] Estimated useful life Property, Plant and Equipment, Useful Life Number of options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] ESPP Employee Stock [Member] Basic (in dollars per share) BASIC earnings per share (in dollars per share) Earnings Per Share, Basic Options unvested, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Nonvested, Weighted Average Exercise Price Ratio of common Stock held to number of LLC interests held Limitation On Issuance Of Common Stock, Ratio Of Common Stock Required To Be Held To Number Of LLC Interests Held Limitation On Issuance Of Common Stock, Ratio Of Common Stock Required To Be Held To Number Of LLC Interests Held Operating cash flows from operating leases Operating Lease, Payments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Brilliant Earth Group, Inc. level pre-tax loss as adjusted for tax Effective Income Tax Rate Reconciliation, Pre-Tax Income (Loss) From Continuing Operations, Percent Effective Income Tax Rate Reconciliation, Pre-Tax Income (Loss) From Continuing Operations, Percent Federal net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Domestic Ownership [Domain] Ownership [Domain] Purchases of property and equipment included in accounts payable and accrued liabilities Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Property and Equipment, Capitalized Software and Website Development and Impairment Tests for Long-Lived Assets Property, Plant and Equipment, Policy [Policy Text Block] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Stock, Class of Stock [Table] Stock, Class of Stock [Table] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Option, cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Total assets Assets Concentration of Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Cost of sales Cost of Goods and Services Sold Amount outstanding Long-Term Line of Credit Marketing and Advertising Costs Advertising Cost [Policy Text Block] Grants in period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Alternative Base Rate Alternative Base Rate [Member] Alternative Base Rate Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments and contingencies (Note 13) Commitments and Contingencies Equity-Based Compensation Share-Based Payment Arrangement [Policy Text Block] Votes per share Common Stock, Votes Per Share Common Stock, Votes Per Share Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Termination Date Trading Arrangement Termination Date LLC Units Converted Into Class A And Class D Common Stock LLC Units Converted Into Class A And Class D Common Stock [Member] LLC Units Converted Into Class A And Class D Common Stock Term Loan Agreement Term Loan Agreement [Member] Term Loan Agreement 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two 2025 Long-Term Debt, Maturity, Year One EQUITY-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Vested LLC Units that are exchangeable for common stock LLC Units Exchangeable For Common Stock [Member] LLC Units Exchangeable For Common Stock Entity Address, City or Town Entity Address, City or Town Fixed charge coverage ratio Debt Instrument, Covenant Compliance, Fixed Charge Coverage Ratio, Percent Debt Instrument, Covenant Compliance, Fixed Charge Coverage Ratio, Percent Leases Lessee, Leases [Policy Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Change in deferred tax asset and TRA liability related to redemption of LLC Units Adjustments To Additional Paid In Capital, Deferred Tax Adjustment Adjustments To Additional Paid In Capital, Deferred Tax Adjustment STOCKHOLDERS’ EQUITY AND MEMBERS UNITS Members' Equity Notes Disclosure [Text Block] Share-based compensation expense Share-Based Payment Arrangement, Expense Net income allocable to Brilliant Earth Group, Inc. Net income attributable to Brilliant Earth Group, Inc., BASIC Net Income (Loss) Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Conversion of Class B to Class A common stock Stock Issued During Period, Value, Conversion of Convertible Securities Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Document Fiscal Year Focus Document Fiscal Year Focus Segment Reporting, Revenue from External Customer, Product and Service [Table] Segment Reporting, Revenue from External Customer, Product and Service [Table] Non-Controlling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Product Concentration Risk Product Concentration Risk [Member] Federal Current Federal Tax Expense (Benefit) Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Entity Address, Address Line Two Entity Address, Address Line Two Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Weighted average shares of common stock outstanding: Weighted Average Number of Shares Outstanding, Basic [Abstract] Other Other Accrued Liabilities, Current Term of contracts Lessee, Operating Lease, Term of Contract Name Forgone Recovery, Individual Name Weighted-average remaining lease term - operating leases Operating Lease, Weighted Average Remaining Lease Term Document Period End Date Document Period End Date Allowance for inventory obsolescence Balance at beginning of period Balance at end of period Inventory Valuation Reserves Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Unvested units (in shares) Unvested, beginning balance (in shares) Unvested, ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Less: equity interest in earnings of subsidiary not taxable (permanent difference) Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Schedule of Stock by Class Schedule of Stock by Class [Table Text Block] Unvested LLC units Unvested LLC Units [Member] Unvested LLC Units 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Revenue recognized Contract with Customer, Liability, Revenue Recognized Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Net income allocable to non-controlling interest Earnings allocable to NCI (not allocable to the Company) Net Income (Loss) Attributable to Noncontrolling Interest Document Transition Report Document Transition Report Tax receivable agreement liability Tax Receivable Agreement, Liability, Noncurrent Tax Receivable Agreement, Liability, Noncurrent Purchase commitments Purchase Obligation Customer [Domain] Customer [Domain] Entity Current Reporting Status Entity Current Reporting Status Tax receivable agreement, recognition in additional-paid-in-capital Tax Receivable Agreement, Recognition in Additional-Paid-in-Capital, Redemption of Interest Tax Receivable Agreement, Recognition in Additional-Paid-in-Capital, Redemption of Interest Retained Earnings Retained Earnings [Member] Amortization of debt issuance costs Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Other Property, Plant and Equipment, Other Types [Member] Deferred tax expense (benefit) Deferred Income Taxes and Other Assets [Abstract] Basic (in shares) Weighted average shares of common stock outstanding, BASIC (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Document Information [Table] Document Information [Table] Total stockholders' equity Stockholders' equity, beginning balance Stockholders' equity, ending balance Equity, Including Portion Attributable to Noncontrolling Interest Unvested RSUs Restricted Stock Units (RSUs) [Member] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Operating ROU assets at cost Operating Lease, Right-of-Use Asset, before Accumulated Amortization Operating Lease, Right-of-Use Asset, before Accumulated Amortization Construction in progress Construction in Progress [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period RSUs Restricted Stock Units (RSUs) and Employee Options [Member] Restricted Stock Units (RSUs) and Employee Options Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Payments on SVB term loan Repayments of Other Long-Term Debt Entity Filer Category Entity Filer Category Fair value of RSUs vested Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name