The Smarter Way to
Source Diamonds

Access 2.5M+ Natural and Lab-Grown diamonds from 500+ suppliers worldwide, with the best cash prices, real-time market insights, and free Malca-Amit delivery.

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UNI Marketplace

Why Buy with UNI?

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Global Diamond Inventory

Access 2.5M+ Natural and Lab-Grown diamonds from 500+ suppliers worldwide. With no minimum order, buy exactly what you need, whether it’s one diamond or many.

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Save Time

Search hundreds of suppliers in one place instead of managing multiple platforms and conversations. Buy from different vendors with one consolidated payment through UNI.

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Quality You Can Trust

Request physical QC before delivery to verify the quality and authenticity of your diamond before it reaches you.

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Get the Best Cash Prices

Access the best cash prices across the UNI marketplace and benefit from volume discounts created by combined buyer demand, even when purchasing a single diamond.

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Understand the Market

Use real-time pricing, supply, and tradability insights to understand where each diamond sits in the market before you buy.

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Buy on Memo

Trade diamonds risk-free with our memo option. Access a wide selection of diamonds, get them delivered the next day, and showcase them to your customers, with no need to hold extra stock.

See It, Buy It, Get It.

See It, Buy It, Get It. UNI
  • 01

    Search Your Criteria

    Filter by the 4Cs and more to quickly find diamonds that match exactly what you need.

  • 02

    Analyze the Market

    Compare prices, supply, tradability, and market trends before making your decision.

  • 03

    Explore 2.5M+ Diamonds

    Compare live Natural and Lab-Grown inventory from 500+ suppliers worldwide in one marketplace.

  • 04

    Complete Your Purchase

    Buy with transparent pricing, simple bidding, consolidated payments, and optional physical QC.

  • 05

    Receive Free Malca-Amit Delivery

    UNI consolidates diamonds purchased from different suppliers into one secure Malca-Amit delivery at no additional shipping cost.

Buy Smarter With Market Insights

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Understand Market Pricing

See average prices, price per carat, supply trends, and the best cash prices for diamonds matching your criteria.

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Check Any GIA Diamond

Enter a GIA certificate number to see its market price, compare similar diamonds available on UNI, and review historical pricing trends.

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Track Supply Changes

See which diamond categories are increasing or decreasing in supply and understand how availability is changing across the market.

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Never Miss the Diamond You Need

Create alerts for specific diamond criteria and get notified when matching diamonds become available.

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Understand Tradability

See how quickly or slowly different diamond categories are selling to understand which goods are moving in the current market.

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Lab-Grown Market Insights

Stay informed with the industry’s first dynamic price reference for Lab-Grown diamonds. Track daily price changes and view historical price movement so you can align every purchase with real-time market insights.

Ready to Source Diamonds Smarter?

Leave your details and book a demo!