FACETWIREPrice Intelligence3.12 ct Marquise Lab-grown diamond (F / VS2) — IGI certificate 821603378
A 3.12 carat marquise lab-grown diamond, F color, VS2 clarity, Very Good cut. Facet Wire tracks this exact certificate so its price can be checked against the live market before you buy.
Stone specifications
| Shape | Marquise |
|---|---|
| Carat | 3.12 |
| Color | F |
| Clarity | VS2 |
| Cut | Very Good |
| Type | Lab-grown |
| Certificate | IGI 821603378 |
Where this stone is listed
Facet Wire currently tracks this certificate at one retailer. If another store lists the same certificate, it will appear here automatically.
| Retailer | Price | $/ct | vs lowest | Deal check |
|---|---|---|---|---|
| Frank Darling | $3,001 | $962 | Lowest | Overpriced +100% vs median $/ct for identical specs · 133 stones |
Same specs at other retailers
A different stone with identical specs — Marquise, F color, VS2 clarity, carat within 0.10 — is listed at Grown Brilliance for $1,450, which is $1,551 less than this certificate's lowest tracked price. Spec-matched stones are not the same physical diamond; only a matching certificate number proves that. How we match.
Facet Wire tracks 12759 marquise lab-grown diamonds; their median price is $579 per carat. This stone's lowest tracked price works out to $962 per carat. This page is one of 7820 certificate pages Facet Wire maintains — one for every tracked certificate.
Price tracked by Facet Wire — updated daily. First tracked 2026-10-16. Listings can sell or change price at any time; the retailer's own page is the final word at checkout.