3 Carat Marquise Lab-Grown Diamonds

Compare marquise lab-grown diamonds weighing 3.00–3.09 ct.

Showing up to 24 matching diamonds. Fresh listings appear first, ordered by lowest observed price. Older listings remain visible with their observation dates and require availability checks. Color, clarity and cut are unrestricted. Prices can depend on payment method; confirm terms at checkout.

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24 matching diamonds shown.

3.00 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 842627895

Last checked November 3, 2026 at 09:54 UTC

3.01 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 841619319

Last checked November 3, 2026 at 09:54 UTC

3.01 ct Marquise lab-grown diamond

G · SI1 · Very Good · IGI 840612452

Last checked November 3, 2026 at 03:54 UTC

3.05 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 844648567

Last checked November 3, 2026 at 09:54 UTC

3.00 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 838620373

Last checked November 3, 2026 at 09:54 UTC

3.03 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 840651032

Last checked November 3, 2026 at 09:54 UTC

3.03 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 842648556

Last checked November 3, 2026 at 09:54 UTC

3.01 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 843601217

Last checked November 3, 2026 at 09:54 UTC

3.02 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 837615144

Last checked November 3, 2026 at 03:54 UTC

3.00 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 835608628

Last checked November 3, 2026 at 09:54 UTC

3.08 ct Marquise lab-grown diamond

F · SI1 · Very Good · IGI 834613101

Last checked November 3, 2026 at 09:54 UTC

Comparing 3 carat marquise lab-grown diamonds

Carat measures weight. Compare measurements and cut as well as color and clarity before choosing a stone. A shared grading certificate identifies the same diamond across sellers; approximate matches require verification.

This page uses 3.00–3.09 ct to keep results close to 3 carats. Use the live search to change the range or filter grades.

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