Shop certified loose diamonds—IGI certified lab-grown and GIA certified natural. Browse by shape, carat, color, clarity, and cut. Start your custom ring design with CAD renderings before crafting.
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Round, Princess, Oval, Emerald, Cushion, Pear, Marquise, Radiant, Asscher, Heart
From 0.5ct to 5ct+
Filter by exact weight or range
D (Colorless) to Z (Light)
D-F offers maximum whiteness
FL to I3
VS-SI offers best value
Need help choosing? Work with our experts to find your perfect diamond.
Learn about the differences between lab-grown and natural diamonds to make the best choice for you.
Found the perfect diamond? Create a custom engagement ring or fine jewelry piece with our design experts.
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Find answers to common questions about buying loose diamonds, certifications, and choosing the perfect stone for your engagement ring or jewelry piece.