Tax distributions and TRA payments 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 Schedule of Additional Lease Information Lease, Cost [Table Text Block] Cover [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect 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] 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] Class A Common Stock Common Class A [Member] Conversion of convertible securities (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 Description of Business and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Operating lease liabilities Increase (Decrease) in Operating Lease Liability 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 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 Operating lease costs Operating Lease, Cost Operating lease liabilities Long-term portion Operating Lease, Liability, Noncurrent 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 Revenue from Contract with Customer [Abstract] Deferred revenue Contract with Customer, Liability, Current Jeffrey Kuo [Member] Jeffrey Kuo 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 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] Selling, 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] Equity Components [Axis] Equity Components [Axis] Award Timing Method Award Timing Method [Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] 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] Use of Estimates Use of Estimates, Policy [Policy Text Block] Changes in outside basis difference Deferred Tax Asset, Parent’s Basis Deferred Tax Asset, Parent’s Basis 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 in 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] Payment of debt issuance costs Payments of Debt Issuance Costs Tabular List, Table Tabular List [Table Text Block] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Five 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 Class C Common Stock Common Class C [Member] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Current portion of TRA Current Portion Of TRA Current Portion Of TRA Current assets: Assets, Current [Abstract] Inventories, Net Inventory Disclosure [Text Block] Treasury stock, common, shares Treasury Stock, Common, Shares Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount 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 Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Security Exchange Name Security Exchange Name Award Type [Axis] Award Type [Axis] 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 RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Property and equipment, net Property, Plant and Equipment, Net Total liabilities Liabilities Non-controlling interests attributable to Brilliant Earth, LLC Equity, Attributable to Noncontrolling Interest 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] Expiration Date Trading Arrangement Expiration Date Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Current portion of operating lease liabilities Less: current portion Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Common stock, shares issued (in shares) Common Stock, Shares, Issued 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 Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Subsequent Event [Line Items] Subsequent Event [Line Items] 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 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 Interest expense Interest Expense, Nonoperating Deferred tax expense Deferred Income Tax Expense (Benefit) Selling, general and administrative Selling, General and Administrative Expense Cost of sales Cost of Sales [Member] 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] 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] Subsequent Event [Table] Subsequent Event [Table] 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] International Non-US [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Accounts payable Accounts Payable, Current Accounting Policies [Abstract] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total lease costs Lease, Cost Statistical Measurement [Axis] Statistical Measurement [Axis] PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before tax 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 Award Type [Domain] Award Type [Domain] Name Outstanding Recovery, Individual Name 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] Deferred tax assets Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Change in 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] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] 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] 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 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] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Outstanding as of December 31, 2022 (in dollars per share) Outstanding as of June 30, 2023 (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Equity-based compensation Share-Based Payment Arrangement, Noncash Expense Net income Net income (loss) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Income tax benefit (expense) Income Tax Expense (Benefit) 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 Revenue from Contract with Customer, Excluding Assessed Tax Deferred tax assets Deferred Tax Assets, Tax Deferred Expense 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] Effective income tax 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) Total liabilities and stockholders' equity Liabilities and Equity Other Other Operating Activities, Cash Flow Statement Subsequent Events Subsequent Events [Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Accrued 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] 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] 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 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 Statement [Line Items] Statement [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] 2026 Contractual Obligation, to be Paid, Year Two Inventory [Domain] Inventory [Domain] Brilliant Earth, LLC Brilliant Earth, LLC [Member] Brilliant Earth, LLC 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 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] 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 Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Adoption Date Trading Arrangement Adoption Date Marketing, advertising and promotional costs Marketing and Advertising Expense Outstanding as of December 31, 2022 (in dollars per share) Outstanding as of March 31, 2023 (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 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 June 30, 2023 (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Reconciliation of cash, cash equivalents and restricted cash Restricted Cash and Cash Equivalents [Abstract] 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] Inventory [Line Items] Inventory [Line Items] Remainder of 2024 Contractual Obligation, to be Paid, Remainder of Fiscal Year Outstanding principal Long-Term Debt, Gross Exercise Price Award Exercise Price Earnings Per Share Earnings Per Share [Text Block] Arrangement Duration Trading Arrangement Duration Subsequent Event Subsequent Event [Member] 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 Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] All Individuals All Individuals [Member] PEO PEO [Member] 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 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] 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; 94,065 shares and none at June 30, 2024 and December 31, 2023, respectively Treasury Stock, Common, Value For the remainder of the year ending December 31, 2024 Long-Term Debt, Maturity, Remainder of Fiscal Year Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] 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 Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Local Phone Number Local Phone Number Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] 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] PEO Total Compensation Amount PEO Total Compensation Amount Schedule of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Income Statement Location [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 Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Common Stock Common Stock [Member] Measure: Measure [Axis] 2027 Contractual Obligation, to be Paid, Year Three 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 Units, beginning balance Units, ending balance Members' Equity Entity Central Index Key Entity Central Index Key Class D Common Stock Common Class D [Member] Common Class D 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] 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] 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 Current portion of long-term debt Current portion Long-Term Debt, Current Maturities Lessee, operating lease, lease not yet commenced, term of contract 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] Equity-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Class B Common Stock Common Class B [Member] Title Trading Arrangement, Individual Title Consigned inventory Inventory, Consigned Inventory Inventory, Consigned Inventory Statement [Table] Statement [Table] City Area Code City Area Code Current liabilities: Liabilities, Current [Abstract] Units, beginning balance (in shares) Units, ending balance (in shares) Common Unit, Outstanding 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 Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] 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 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 Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Unrecorded Unconditional Purchase Obligation, Including Lease Not yet Commenced, Total Unrecorded Unconditional Purchase Obligation Subsequent Event Type [Axis] Subsequent Event Type [Axis] 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] Sales and other tax payable accrual Accrual for Taxes Other than Income Taxes, Current Retained earnings Retained Earnings (Accumulated Deficit) 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 2026 Long-Term Debt, Maturity, Year Two Aggregate Available Trading Arrangement, Securities Aggregate Available Amount 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 Operating Lease, Liability Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name 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 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 Fair Value as of Grant Date Award Grant Date Fair Value Subsequent Events [Abstract] 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] 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 Common stock, value, issued Common Stock, Value, Issued 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 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 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 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, 10,000,000 shares authorized, none issued and outstanding at June 30, 2024 and December 31, 2023, respectively Preferred Stock, Value, Issued Unvested LLC Units that are exchangeable for common stock Share-Based Payment Arrangement [Member] Number of options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] 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 Cash paid for amounts included in the measurement of lease liabilities 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] Ownership [Domain] Ownership [Domain] 2025 Contractual Obligation, to be Paid, Year One 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] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] 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 Cost of sales Cost of Goods and Services Sold Amount outstanding Long-Term Line of Credit Marketing Expenses 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 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 10) Commitments and Contingencies Termination Date Trading Arrangement Termination Date 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] Inventory received not billed Inventory Received Not Billed, Current Inventory Received Not Billed, Current 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 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 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] 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 Revenue Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Non-Controlling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Repurchases of common stock Treasury Stock, Value, Acquired, Cost Method 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] Term of contracts Lessee, Operating Lease, Term of Contract Other Other Accrued Liabilities, Current Name Forgone Recovery, Individual Name For the remainder of the year ending December 31, 2024 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 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, 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] Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount 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 Net Income (Loss) Attributable to Noncontrolling Interest Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Tax receivable agreement liability Tax Receivable Agreement, Liability, Noncurrent Tax Receivable Agreement, Liability, Noncurrent 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] 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 RSUs Restricted Stock Units (RSUs) [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Payments on SVB term loan Repayments of Other Long-Term Debt Entity Filer Category Entity Filer Category Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name