<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2023 Workiva-->
<!--r:be05419e-01fc-4fdd-85d3-65a951f29669,g:526eaf95-e615-4677-af99-78575a0d42e0-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:brlt="http://brilliantearth.com/20230331" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://brilliantearth.com/20230331">
  <xs:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="brlt-20230331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="brlt-20230331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="brlt-20230331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="brlt-20230331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://brilliantearth.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UNAUDITEDCONDENSEDCONSOLIDATEDBALANCESHEETS" roleURI="http://brilliantearth.com/role/UNAUDITEDCONDENSEDCONSOLIDATEDBALANCESHEETS">
        <link:definition>0000002 - Statement - UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UNAUDITEDCONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://brilliantearth.com/role/UNAUDITEDCONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>0000003 - Statement - UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://brilliantearth.com/role/UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS">
        <link:definition>0000004 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY" roleURI="http://brilliantearth.com/role/UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY">
        <link:definition>0000005 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://brilliantearth.com/role/UNAUDITEDCONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>0000006 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPolicies" roleURI="http://brilliantearth.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPolicies">
        <link:definition>0000007 - Disclosure - Description of Business and Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://brilliantearth.com/role/EarningsPerShare">
        <link:definition>0000008 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://brilliantearth.com/role/Revenue">
        <link:definition>0000009 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNet" roleURI="http://brilliantearth.com/role/InventoriesNet">
        <link:definition>0000010 - Disclosure - Inventories, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesandOtherCurrentLiabilities" roleURI="http://brilliantearth.com/role/AccruedExpensesandOtherCurrentLiabilities">
        <link:definition>0000011 - Disclosure - Accrued Expenses and Other Current Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://brilliantearth.com/role/Leases">
        <link:definition>0000012 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DEBT" roleURI="http://brilliantearth.com/role/DEBT">
        <link:definition>0000013 - Disclosure - DEBT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensation" roleURI="http://brilliantearth.com/role/EquityBasedCompensation">
        <link:definition>0000014 - Disclosure - Equity-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesandTaxReceivableAgreement" roleURI="http://brilliantearth.com/role/IncomeTaxesandTaxReceivableAgreement">
        <link:definition>0000015 - Disclosure - Income Taxes and Tax Receivable Agreement</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://brilliantearth.com/role/CommitmentsandContingencies">
        <link:definition>0000016 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://brilliantearth.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>0000017 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://brilliantearth.com/role/EarningsPerShareTables">
        <link:definition>0000018 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://brilliantearth.com/role/RevenueTables">
        <link:definition>0000019 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetTables" roleURI="http://brilliantearth.com/role/InventoriesNetTables">
        <link:definition>0000020 - Disclosure - Inventories, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesandOtherCurrentLiabilitiesTables" roleURI="http://brilliantearth.com/role/AccruedExpensesandOtherCurrentLiabilitiesTables">
        <link:definition>0000021 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://brilliantearth.com/role/LeasesTables">
        <link:definition>0000022 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://brilliantearth.com/role/DebtTables">
        <link:definition>0000023 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensationTables" roleURI="http://brilliantearth.com/role/EquityBasedCompensationTables">
        <link:definition>0000024 - Disclosure - Equity-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesDetails" roleURI="http://brilliantearth.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesDetails">
        <link:definition>0000025 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareDetails" roleURI="http://brilliantearth.com/role/EarningsPerShareDetails">
        <link:definition>0000026 - Disclosure - Earnings Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractwithCustomerScheduleofDisaggregationofRevenueDetails" roleURI="http://brilliantearth.com/role/RevenuefromContractwithCustomerScheduleofDisaggregationofRevenueDetails">
        <link:definition>0000027 - Disclosure - Revenue from Contract with Customer - Schedule of Disaggregation of Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractwithCustomerNarrativeDetails" roleURI="http://brilliantearth.com/role/RevenuefromContractwithCustomerNarrativeDetails">
        <link:definition>0000028 - Disclosure - Revenue from Contract with Customer- Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetScheduleofInventoriesNetDetails" roleURI="http://brilliantearth.com/role/InventoriesNetScheduleofInventoriesNetDetails">
        <link:definition>0000029 - Disclosure - Inventories, Net - Schedule of Inventories, Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetAllowanceforInventoryObsolescenceDetails" roleURI="http://brilliantearth.com/role/InventoriesNetAllowanceforInventoryObsolescenceDetails">
        <link:definition>0000030 - Disclosure - Inventories, Net - Allowance for Inventory Obsolescence (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetNarrativesDetails" roleURI="http://brilliantearth.com/role/InventoriesNetNarrativesDetails">
        <link:definition>0000031 - Disclosure - Inventories, Net - Narratives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesandOtherCurrentLiabilitiesAccruedExpensesAndOtherCurrentLiabilitiesDetails" roleURI="http://brilliantearth.com/role/AccruedExpensesandOtherCurrentLiabilitiesAccruedExpensesAndOtherCurrentLiabilitiesDetails">
        <link:definition>0000032 - Disclosure - Accrued Expenses and Other Current Liabilities - Accrued Expenses And Other Current Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedExpensesandOtherCurrentLiabilitiesAccruedExpensesandOtherCurrentLiabilitiesisaProvisionForSalesReturnsDetails" roleURI="http://brilliantearth.com/role/AccruedExpensesandOtherCurrentLiabilitiesAccruedExpensesandOtherCurrentLiabilitiesisaProvisionForSalesReturnsDetails">
        <link:definition>0000033 - Disclosure - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities is a Provision For Sales Returns (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://brilliantearth.com/role/LeasesNarrativeDetails">
        <link:definition>0000034 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTotalOperatingLeaseRightofUseAssetsandOperatingLeaseLiabilitiesDetails" roleURI="http://brilliantearth.com/role/LeasesTotalOperatingLeaseRightofUseAssetsandOperatingLeaseLiabilitiesDetails">
        <link:definition>0000035 - Disclosure - Leases - Total Operating Lease Right-of-Use Assets and Operating Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumLeasePaymentsUnderLongtermNoncancelableOperatingLeasesDetails" roleURI="http://brilliantearth.com/role/LeasesFutureMinimumLeasePaymentsUnderLongtermNoncancelableOperatingLeasesDetails">
        <link:definition>0000036 - Disclosure - Leases - Future Minimum Lease Payments Under Long-term Non-cancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumLeasePaymentsUnderLongtermNoncancelableOperatingLeasesDetails_1" roleURI="http://brilliantearth.com/role/LeasesFutureMinimumLeasePaymentsUnderLongtermNoncancelableOperatingLeasesDetails_1">
        <link:definition>0000036 - Disclosure - Leases - Future Minimum Lease Payments Under Long-term Non-cancelable Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesWeightedAverageRemainingLeaseTermandWeightedAverageDiscountRateDetails" roleURI="http://brilliantearth.com/role/LeasesWeightedAverageRemainingLeaseTermandWeightedAverageDiscountRateDetails">
        <link:definition>0000037 - Disclosure - Leases - Weighted Average Remaining Lease Term and Weighted Average Discount Rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTermLoanDetails" roleURI="http://brilliantearth.com/role/DebtTermLoanDetails">
        <link:definition>0000038 - Disclosure - Debt - Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTermLoanDetails_1" roleURI="http://brilliantearth.com/role/DebtTermLoanDetails_1">
        <link:definition>0000038 - Disclosure - Debt - Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNarrativeDetails" roleURI="http://brilliantearth.com/role/DebtNarrativeDetails">
        <link:definition>0000039 - Disclosure - Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDebtMaturityDetails" roleURI="http://brilliantearth.com/role/DebtDebtMaturityDetails">
        <link:definition>0000040 - Disclosure - Debt - Debt Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensationNarrativeDetails" roleURI="http://brilliantearth.com/role/EquityBasedCompensationNarrativeDetails">
        <link:definition>0000041 - Disclosure - Equity-Based Compensation - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensationRSUActivityDetails" roleURI="http://brilliantearth.com/role/EquityBasedCompensationRSUActivityDetails">
        <link:definition>0000042 - Disclosure - Equity-Based Compensation - RSU Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensationStockOptionActivityDetails" roleURI="http://brilliantearth.com/role/EquityBasedCompensationStockOptionActivityDetails">
        <link:definition>0000043 - Disclosure - Equity-Based Compensation - Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityBasedCompensationLLCUnitActivityDetails" roleURI="http://brilliantearth.com/role/EquityBasedCompensationLLCUnitActivityDetails">
        <link:definition>0000044 - Disclosure - Equity-Based Compensation - LLC Unit Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesandTaxReceivableAgreementNarrativeDetails" roleURI="http://brilliantearth.com/role/IncomeTaxesandTaxReceivableAgreementNarrativeDetails">
        <link:definition>0000045 - Disclosure - Income Taxes and Tax Receivable Agreement - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="brlt_DeferredTaxAssetParentsBasis" abstract="false" name="DeferredTaxAssetParentsBasis" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_RestrictedStockUnitsRSUsAndEmployeeOptionsMember" abstract="true" name="RestrictedStockUnitsRSUsAndEmployeeOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_ContractWithCustomerRefundLiabilityProvision" abstract="false" name="ContractWithCustomerRefundLiabilityProvision" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_VestedLLCUnitsExchangeableForCommonStockMember" abstract="true" name="VestedLLCUnitsExchangeableForCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_InventoryConsignedInventory" abstract="false" name="InventoryConsignedInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_ChangeInAdditionalPaidInCapitalRelatedToRedemptionOfUnits" abstract="false" name="ChangeInAdditionalPaidInCapitalRelatedToRedemptionOfUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_NumberOfShowrooms" abstract="false" name="NumberOfShowrooms" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="brlt_LimitedLiabilityCompanyLLCMembersEquityTaxDistributionsToMembers" abstract="false" name="LimitedLiabilityCompanyLLCMembersEquityTaxDistributionsToMembers" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_InventoryValuationReservesRollForward" abstract="true" name="InventoryValuationReservesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="brlt_DebtInstrumentCovenantComplianceConsolidatedBorrowerLeverageRatioTemporaryIncreasedAmountPercent" abstract="false" name="DebtInstrumentCovenantComplianceConsolidatedBorrowerLeverageRatioTemporaryIncreasedAmountPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_DebtInstrumentCovenantComplianceFixedChargeCoverageRatioPercent" abstract="false" name="DebtInstrumentCovenantComplianceFixedChargeCoverageRatioPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_RunwayTermLoanAgreementMember" abstract="true" name="RunwayTermLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_DebtInstrumentFinalPrepaymentFeePercentOfPrincipalAmount" abstract="false" name="DebtInstrumentFinalPrepaymentFeePercentOfPrincipalAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodOne" abstract="false" name="LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_OperatingLeaseRightOfUseAssetBeforeAccumulatedAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetBeforeAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodTwo" abstract="false" name="LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_DebtInstrumentCovenantComplianceConsolidatedBorrowerLeverageRatioPercent" abstract="false" name="DebtInstrumentCovenantComplianceConsolidatedBorrowerLeverageRatioPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_AdjustmentsToAdditionalPaidInCapitalDeferredTaxAdjustment" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalDeferredTaxAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_AccruedVendorExpensesCurrent" abstract="false" name="AccruedVendorExpensesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="brlt_InventoryReceivedNotBilledCurrent" abstract="false" name="InventoryReceivedNotBilledCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="brlt_WarrantLiabilityFairValueDisclosure" abstract="false" name="WarrantLiabilityFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_LongTermDebtExcludingCurrentMaturitiesGross" abstract="false" name="LongTermDebtExcludingCurrentMaturitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_TaxReceivableAgreementObligationAssociatedWithRedemptionOfUnits" abstract="false" name="TaxReceivableAgreementObligationAssociatedWithRedemptionOfUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_LesseeOperatingLeaseLeaseNotYetCommencedAmount" abstract="false" name="LesseeOperatingLeaseLeaseNotYetCommencedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_DebtInstrumentAnnualAdjustmentPercent" abstract="false" name="DebtInstrumentAnnualAdjustmentPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_LooseDiamondsMember" abstract="true" name="LooseDiamondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_CommonClassDMember" abstract="true" name="CommonClassDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_DebtInstrumentPrepaymentFeePercent" abstract="false" name="DebtInstrumentPrepaymentFeePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_DebtInstrumentCovenantComplianceConsolidatedTotalLeverageRatioPercent" abstract="false" name="DebtInstrumentCovenantComplianceConsolidatedTotalLeverageRatioPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_ClassPWarrantsMember" abstract="true" name="ClassPWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_ContractWithCustomerExtendedServicePlanPeriod" abstract="false" name="ContractWithCustomerExtendedServicePlanPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="brlt_NetIncomeLossFromImpactOfAssumedRedemptionOfAllLLCUnitsToCommonStock" abstract="false" name="NetIncomeLossFromImpactOfAssumedRedemptionOfAllLLCUnitsToCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageRemainingContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="brlt_CurrentPortionOfTRA" abstract="false" name="CurrentPortionOfTRA" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_DebtInstrumentFinalPrepaymentFee" abstract="false" name="DebtInstrumentFinalPrepaymentFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_LLCUnitsMember" abstract="true" name="LLCUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_DeferredIncomeTaxAssetsRelatedToTaxReceivableAgreement" abstract="false" name="DeferredIncomeTaxAssetsRelatedToTaxReceivableAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_BrilliantEarthLLCMember" abstract="true" name="BrilliantEarthLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNonvestedNumber" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNonvestedNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="brlt_DeferredTaxAssetsAssociatedWithRedemptionOfUnits" abstract="false" name="DeferredTaxAssetsAssociatedWithRedemptionOfUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_AlternativeBaseRateMember" abstract="true" name="AlternativeBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_ContractWithCustomerRefundLiabilityReturnsAndAllowances" abstract="false" name="ContractWithCustomerRefundLiabilityReturnsAndAllowances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestNonvestedWeightedAverageExercisePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="brlt_DebtInstrumentVariableRateFloor" abstract="false" name="DebtInstrumentVariableRateFloor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodThree" abstract="false" name="LineOfCreditFacilityPeriodicPaymentQuarterlyPaymentPercentPeriodThree" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_UnvestedLLCUnitsExchangeableForCommonStockMember" abstract="true" name="UnvestedLLCUnitsExchangeableForCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_TermLoanAgreementMember" abstract="true" name="TermLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_ContractWithCustomerRefundLiabilityRollForward" abstract="true" name="ContractWithCustomerRefundLiabilityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="brlt_FineJewelryAndOtherMember" abstract="true" name="FineJewelryAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="brlt_TaxReceivableAgreementLiabilityNoncurrent" abstract="false" name="TaxReceivableAgreementLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_IncomeTaxExpenseBenefitPortionAttributableToNoncontrollingInterest" abstract="false" name="IncomeTaxExpenseBenefitPortionAttributableToNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_OperatingLeaseRightOfUseAssetAccumulatedAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="brlt_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="brlt_NoncontrollingInterestTaxBenefitDistributionsToNoncontrollingInterestHoldersPercent" abstract="false" name="NoncontrollingInterestTaxBenefitDistributionsToNoncontrollingInterestHoldersPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="brlt_TaxReceivableAgreementRecognitionInAdditionalPaidInCapitalRedemptionOfInterest" abstract="false" name="TaxReceivableAgreementRecognitionInAdditionalPaidInCapitalRedemptionOfInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
