Collection: 3 Carat Marquise Lab Grown Diamonds

Browse loose 3 carat marquise lab grown diamonds (3.00–3.99 ct), sorted from the lowest price. Marquise cuts are long with pointed ends, giving the most finger coverage for the carat weight.

• Real lab grown diamonds from DovEggs partner labs (our Group lab diamonds), with price match.
• Certificates: most of these stones come with an IGI report; the report number is laser-inscribed on the girdle and can be verified online.
• Timing: each stone reaches our workshop in about 2 or about 7 business days depending on the supplier — every stone's page shows its timing.
• Make it a ring: any stone here can be set in a made-to-order DovEggs setting — start with a loose lab grown diamond.

Looking for one of our own hand-selected stones? See DovEggs Boutique Lab Diamonds. Other sizes: 1 carat marquise · 2 carat marquise · 4 carat marquise.