FACETWIREPrice Intelligence1.67 ct Elongated Cushion Lab-grown diamond (E / VS1) — IGI certificate 675580826
A 1.67 carat elongated cushion lab-grown diamond, E color, VS1 clarity, Super Ideal cut. Facet Wire tracks this exact certificate so its price can be checked against the live market before you buy.
Stone specifications
| Shape | Elongated Cushion |
|---|---|
| Carat | 1.67 |
| Color | E |
| Clarity | VS1 |
| Cut | Super Ideal |
| Type | Lab-grown |
| Certificate | IGI 675580826 |
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 | $1,591 | $953 | Lowest | Overpriced +112% vs median $/ct for identical specs · 98 stones |
Same specs at other retailers
A different stone with identical specs — Elongated Cushion, E color, VS1 clarity, carat within 0.10 — is listed at Grown Brilliance for $705, which is $886 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 8993 elongated cushion lab-grown diamonds; their median price is $579 per carat. This stone's lowest tracked price works out to $953 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 2026-10-17. Listings can sell or change price at any time; the retailer's own page is the final word at checkout.