Last Updated: September 3, 2026

This Seller Supplement applies to approved Sellers who create Listings, receive access to the Seller Hub, or otherwise participate on the Platform as a Seller. By registering as a Seller, creating Listings, purchasing a Subscription, or otherwise acting as a Seller on the Platform, you agree to this Seller Supplement.

This Seller Supplement supplements and is incorporated into the LattiSpec Terms of Service. The Terms of Service remain in full force and effect and are incorporated into this Seller Supplement by reference. In the event of a conflict between this Seller Supplement and the Terms of Service, this Seller Supplement will control solely with respect to Seller-specific rights, obligations, services, fees, and commercial terms. Capitalized terms not defined in this Seller Supplement have the meanings given in the Terms of Service.

1. Seller Hub

Subject to this Seller Supplement, we will provide you with access to the seller-facing features, tools, services, and functionality included with your membership tier, plan, or package you select through the Platform (“Subscription“). Depending on your Subscription, these may include the ability to create and manage Listings, display Products, communicate with Buyers, participate in Promotional Services, receive visibility enhancements, maintain storefronts or profiles, and access other marketplace features and benefits that we make available from time to time.

You are solely responsible for all Listings, Product Information, communications, branding, marketing materials, and other content that you submit to or make available through the Platform and for ensuring that such content complies with this Seller Supplement, the Terms of Service, and applicable law.

We retain all right, title, and interest in and to the Platform and all related intellectual property rights. Except for the limited right to access and use the Platform in accordance with this Seller Supplement, the Terms of Service, and your Subscription, no rights are granted to you.

We may modify, update, suspend, limit, discontinue, or replace Platform features, functionality, tools, services, storefronts, profiles, or other marketplace features from time to time. If we materially modify your Subscription, including Subscription Fees, included features, services, benefits, or usage limits, we will provide notice as described in this Seller Supplement.

2. Seller Account

You must establish and maintain an active account to access and use Seller features on the Platform. We may require you to provide information about your business, Products, or other matters in connection with your account or participation as a Seller. You are responsible for ensuring that all information you provide to us is accurate, complete, and current. By creating or using a Seller account, you represent that you have authority to act on behalf of the applicable business and to bind that business to this Seller Supplement, the Terms of Service, and any transactions entered into as a result of your use of the Platform.

You are responsible for maintaining the confidentiality and security of your account credentials and for all activities occurring under your account. You must promptly notify us of any unauthorized access to or use of your account or credentials.

3. Listings

You may create Listings through the Platform to market and promote your Products. You are solely responsible for your Listings and Product Information and for ensuring that such information is accurate, complete, current, and not misleading.

You may not create, submit, promote, offer, sell, distribute, or otherwise make available through the Platform any Product, Listing, or Product Information that: (i) violates applicable law; (ii) infringes or violates the rights of any third party; (iii) involves counterfeit, stolen, unauthorized, or illegally obtained goods; (iv) involves products, materials, or services that you are not authorized to provide; (v) violates applicable export controls, trade restrictions, sanctions, or similar requirements; or (vi) is otherwise inconsistent with the purpose, standards, or requirements of the Platform.

We may establish requirements, limitations, content standards, formatting requirements, eligibility requirements, and operational procedures relating to Listings. We may determine the placement, ranking, visibility, presentation, promotion, and duration of Listings in our discretion. Listing visibility, placement, availability, duration, and related features may depend on your Subscription, participation in Promotional Services, marketplace activity, eligibility status, or other factors.

We may review, reject, remove, suspend, restrict, modify, or discontinue any Listing that violates this Seller Supplement, the Terms of Service, applicable law, or otherwise creates risk for the Platform or its users.

4. Promotional Services

We may offer advertising, marketing, lead generation, featured placement, sponsored content, outreach, branding, visibility enhancements, and other promotional services (collectively, “Promotional Services“) to Sellers as part of the Subscription or as otherwise described from time to time. The availability, scope, pricing, and other terms applicable to Promotional Services will be specified in this Seller Supplement, on the Platform, or otherwise communicated by us. We may determine the placement, ranking, display, visibility, presentation, and promotion of Listings, storefronts, Products, advertisements, and other content on the Platform in our discretion. Participation in Promotional Services may affect the visibility or placement of your Listings, storefront, Products, or other content. Promotional Services are provided on an “as available” basis and may be modified, suspended, or discontinued at any time. We do not guarantee visibility, engagement, inquiries, leads, introductions, revenue, or any other business results arising from Promotional Services. Promotional Services do not constitute brokerage, agency, fiduciary, sourcing, procurement, negotiation, valuation, investment advisory, or representation services.

5. Leads

Subscriptions may include a specified number of buyer introductions, inquiries, or opportunities each month (“Leads“), as described on the Platform or in the applicable Subscription details. A “Lead” means a prospective Buyer identified, referred, introduced, matched, connected, or otherwise presented to you through the Platform or by us in connection with your use of the Platform, regardless of whether such Lead results in communications, a request for information, a quotation, or any other business opportunity.

Any Leads provided in excess of the included allocation may be subject to additional fees. Unless otherwise specified on the Platform, we may invoice you monthly for any excess Leads at our then-current rates. Any Leads included with your Subscription must be used during the applicable month and expire at the end of that month if unused. Unused Leads do not roll over, accumulate, or carry forward to future months unless we expressly agree otherwise in writing. We do not guarantee the quality, qualifications, responsiveness, purchasing intent, suitability, or conversion of any Lead and do not guarantee that any Lead will result in communications, opportunities, transactions, revenue, or other business results.

6. Subscriptions

An active Subscription is required to access Seller features on the Platform, including the ability to create Listings, communicate with Buyers, maintain a storefront, and access other Seller tools and functionality. You must select a Subscription plan and pay the applicable Subscription Fees specified on the Platform at the time of purchase. Unless otherwise specified at checkout, your Subscription is an annual commitment beginning on the date of purchase. By purchasing the Subscription, you agree to the pricing and other terms specified at checkout, which are incorporated into this Seller Supplement. Subscription Fees will automatically renew, and subsequent Subscription Fees will be billed in advance within 7 days of the anniversary and annually thereafter for the duration of the Subscription Term. BY PURCHASING A SUBSCRIPTION, YOU AUTHORIZE US AND OUR PAYMENT PROCESSOR TO CHARGE YOUR DESIGNATED PAYMENT METHOD FOR ALL SUBSCRIPTION FEES AND OTHER AMOUNTS DUE UNDER THIS SELLER SUPPLEMENT.

We may modify Subscription Fees, included services, features, benefits, usage limits, or other Subscription-related terms effective upon any renewal term by providing at least 60 days’ prior written notice before the applicable renewal date. Your renewal of the Subscription following such notice constitutes acceptance of the updated Subscription terms and the associated Subscription Fees.

Subscription Fees are non-refundable once paid, except as otherwise expressly agreed by us in writing. You remain responsible for all Subscription Fees due during the applicable Subscription Term regardless of your level of use of the Platform. If you fail to pay any Subscription Fees when due, we may suspend, restrict, or terminate your access to the Platform, Listings, storefronts, Promotional Services, and other Subscription-related features or benefits until all outstanding amounts are paid.

Upon expiration or termination of your Subscription, your access to Subscription features, benefits, Promotional Services, storefront functionality, visibility enhancements, Leads, Listings, and other Subscription-related services may be suspended or discontinued. You may cancel your Subscription at any time, and such termination will be effective at the expiration of your then-current Subscription period.

Subscription Fee payments are processed through our third-party Payment Processor and are subject to the Payment Processor’s applicable terms, policies, procedures, and payout schedules. You are responsible for complying with all applicable Payment Processor requirements. We do not control and are not responsible for the acts, omissions, availability, security, policies, or other conduct of any Payment Processor. We may change Payment Processors or payment processing procedures at any time.

7. Late and Under-Payments

You are responsible for timely payment of all amounts due under this Seller Supplement. If you fail to timely pay any amount due under this Seller Supplement, we may: (i) invoice you for the unpaid amount; (ii) charge interest on overdue amounts at the lesser of 1.5% per month or the maximum rate permitted by law; (iii) recover our reasonable costs of collection, including reasonable attorneys’ fees, collection costs, and court costs; (iv) suspend, restrict, or terminate your access to the Platform, Listings, storefronts, Promotional Services, or other Seller features; and (v) pursue any other rights or remedies available under this Seller Supplement, the Terms of Service, or applicable law.

8. Taxes

You are solely responsible for determining, collecting, reporting, and remitting any taxes, duties, levies, or other governmental charges arising from your Listings, Products, or use of the Platform, excluding taxes based on our net income. You are also responsible for maintaining any required tax registrations, permits, exemption certificates, resale certificates, or other tax-related documentation. If we are required to collect, remit, or pay any taxes arising from your activities on the Platform, you will promptly reimburse us for such amounts. You will also indemnify us for any taxes, penalties, interest, liabilities, or costs arising from your failure to comply with your obligations under this section.

9. Compliance with Laws

In addition to the requirements set forth in the Terms of Service, you will comply with all applicable laws, regulations, and industry standards relating to your Products, Listings, and use of the Platform, including laws relating to export controls, sanctions, anti-corruption, anti-bribery, anti-money laundering, trade compliance, product safety, and intellectual property. You represent that you are not located in, organized under the laws of, owned or controlled by, or acting on behalf of any person, entity, country, or territory subject to applicable sanctions or restrictions, and that you will not use the Platform to engage in or facilitate any activity prohibited by applicable law. You are responsible for determining whether any Product is subject to export controls, trade restrictions, licensing requirements, or other legal requirements and for obtaining any required approvals, permits, licenses, or authorizations. To the extent applicable, you will comply with all laws, regulations, and industry standards relating to the sourcing, handling, sale, and distribution of diamonds and other regulated materials, including any applicable ethical sourcing, conflict-free sourcing, traceability, and chain-of-custody requirements. We may suspend, restrict, or terminate your access to the Platform if we reasonably believe you have violated this section or applicable law.

10. Product Information

You are responsible for all Product Information that you provide through the Platform or in connection with any Listing. You represent and warrant that all Product Information is accurate, complete, current, not misleading, and does not infringe or violate the rights of any third party. You further represent that you have all rights, licenses, consents, and permissions necessary to provide, use, and disclose such Product Information through the Platform. You grant us a non-exclusive, worldwide, royalty-free license to host, store, reproduce, display, distribute, transmit, modify, and otherwise use Product Information as reasonably necessary to operate, maintain, promote, and provide the Platform and related services.

11. Seller Communications

You are responsible for all communications, representations, warranties, commitments, guarantees, specifications, pricing, availability information, and other information that you provide to Buyers or prospective Buyers through or in connection with the Platform. You will ensure that such information is accurate, complete, current, and not misleading, and you are responsible for fulfilling any commitments or obligations that you make to a Buyer. We are not your agent and will not negotiate on your behalf or make representations, warranties, guarantees, commitments, quotations, pricing offers, or other statements regarding you or your Products. We will not knowingly misrepresent your Products, Product Information, pricing, availability, or other information that you provide to us.

12. Term and Termination

This Seller Supplement applies for as long as you access or use Seller features on the Platform, maintain a Subscription, create or maintain Listings, or otherwise act as a Seller. The initial term of your Subscription begins on the date of purchase and continues for one year unless otherwise specified on the Platform (the “Subscription Term“). Each Subscription Term will automatically renew on each anniversary date for successive one-year terms unless either party provides notice of non-renewal at least 30 days before the end of the then-current term. Your Subscription will remain in effect for the applicable Subscription Term, including any renewal term, unless it expires or is terminated as provided in this Seller Supplement or the Terms of Service. Termination of your Subscription may result in suspension or discontinuation of your access to Seller features, Listings, storefronts, Promotional Services, Leads, visibility enhancements, and other Subscription-related benefits.

We may suspend, restrict, or terminate your access to Seller features if we reasonably determine that: (i) you violated this Seller Supplement, the Terms of Service, or applicable law; (ii) you failed to pay amounts due to us; (iii) you provided false, misleading, or incomplete information; or (iv) suspension, restriction, or termination is reasonably necessary to protect the Platform, LattiSpec, Buyers, other users, or marketplace integrity.

Expiration or termination of this Seller Supplement or your Subscription will not affect any rights, obligations, or liabilities accrued before expiration or termination, including obligations relating to Subscription Fees, confidentiality, intellectual property, indemnification, dispute resolution, limitations of liability, or any provision that by its nature is intended to survive will survive.

13. Confidentiality

In connection with your use of the Platform, you may provide and/or receive non-public information relating to Buyers, Product Information, pricing, and other business information (“Confidential Information“). You will use Confidential Information solely in connection with your use of the Platform and will not disclose Confidential Information to any third party except to your employees, contractors, advisors, and service providers who have a need to know such information and are subject to confidentiality obligations. We may use and disclose Confidential Information as reasonably necessary to operate the Platform, provide related services, enforce this Seller Supplement and the Terms of Service, collect amounts due, comply with applicable law, and protect the rights, property, or safety of LattiSpec, users, or third parties. These obligations do not apply to information that is publicly available through no fault of the receiving party, was already known without restriction, was lawfully obtained from a third party without restriction, or was independently developed without use of the Confidential Information. If disclosure is required by law, regulation, court order, or legal process, the receiving party may make such disclosure and, when legally permitted, will provide reasonable notice to the other party.

14. Data Protection

We may collect, process, store, transmit, disclose, and otherwise use information provided through or in connection with the Platform as reasonably necessary to operate, maintain, support, improve, administer, promote, and provide the Platform and related services. We will maintain commercially reasonable administrative, technical, and organizational measures designed to protect information maintained through the Platform from unauthorized access, use, disclosure, alteration, or destruction. You will comply with applicable laws relating to privacy, data protection, and communications in connection with your use of the Platform and any Personal Information obtained through the Platform. You may use Personal Information obtained through the Platform only as reasonably necessary to evaluate opportunities and communicate with Buyers. You may not sell, rent, disclose, share, or use such Personal Information for marketing, advertising, solicitation, or other purposes except as permitted by applicable law or the applicable individual’s consent. You will maintain reasonable safeguards designed to protect Personal Information obtained through the Platform and will promptly notify us of any unauthorized access to or misuse of such information. You may not use Personal Information obtained through the Platform to circumvent the Platform or otherwise violate this Seller Supplement or the Terms of Service.

15. Marketplace Analytics and Related Data

We may collect, generate, analyze, and use aggregated, statistical, anonymized, or de-identified Marketplace Analytics derived from your use of the Platform, Listings, and related marketplace activity. Marketplace Analytics do not identify you or disclose your Confidential Information and may be used by us to develop analytics, benchmarking tools, pricing trends, market insights, industry reports, marketplace intelligence products, and other business or commercial materials. We retain all right, title, and interest in and to Marketplace Analytics and may use, disclose, publish, license, commercialize, and otherwise exploit Marketplace Analytics for any lawful business purpose.

16. Representations and Warranties

You represent and warrant that: (i) you have the power and authority to enter into and perform your obligations under this Seller Supplement; (ii) all information you provide in connection with your account, Listings, Products, and use of the Platform is accurate, complete, current, and not misleading; (iii) you have all rights, licenses, permissions, and authority necessary to market, offer, sell, distribute, and provide your Products and Product Information through the Platform; (iv) your Products, Listings, Product Information, and other materials provided through the Platform do not violate applicable law or infringe the rights of any third party; and (v) your use of the Platform will comply with applicable law.

17. Disclaimer of Warranties

The disclaimer of warranties provisions in the Terms of Service are incorporated into this Seller Supplement by reference. Without limiting the foregoing, we do not guarantee the availability of Buyers, Leads, business opportunities, Promotional Services, revenue, or any other commercial outcome arising from your use of the Platform. We are not a party to transactions between Buyers and Sellers and do not guarantee the performance of any Buyer, the completion of any transaction, or the payment of any amounts from a Buyer.

18. Aggregate Liability

LATTISPEC’S AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THIS SELLER SUPPLEMENT WILL NOT EXCEED THE TOTAL AMOUNT OF SUBSCRIPTION FEES AND OTHER FEES PAID OR PAYABLE BY SELLER TO LATTISPEC DURING THE 12 MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM.

19. Indemnification

You will defend, indemnify, and hold harmless LattiSpec, its affiliates, and their respective officers, directors, employees, agents, successors, and assigns from and against any third-party claims, liabilities, damages, losses, judgments, settlements, costs, and expenses (including reasonable attorneys’ fees) arising out of or relating to: (i) your Products, Listings, Product Information, communications, or other content or materials that you provide through or in connection with the Platform; (ii) your violation of applicable law; (iii) your violation of any third-party rights; or (iv) your breach of this Seller Supplement or our Terms of Service.

20. Integration

This Seller Supplement, the Terms of Service, the Privacy Policy, and any documents expressly incorporated by reference govern your access to and use of Seller features on the Platform. In the event of a conflict between these documents, the following order of precedence will apply: (i) this Seller Supplement; (ii) the Terms of Service; and (iii) the Privacy Policy.

21. Assignment

We may assign this Seller Supplement without your consent, including in connection with a merger, acquisition, reorganization, financing, corporate transaction, or sale of all or substantially all of our assets. You may not assign this Seller Supplement without our prior written consent, except in connection with a merger, acquisition, reorganization, or sale of all or substantially all of your assets, provided that the assignee agrees to be bound by this Seller Supplement and the Terms of Service. Any attempted assignment in violation of this section is void.