1.59 ct Round Lab-grown diamond (M / SI1) — IGI certificate 11364520
A 1.59 carat round lab-grown diamond, M color, SI1 clarity, Excellent cut. Facet Wire tracks this exact certificate so its price can be checked against the live market before you buy.

Stone specifications
| Shape | Round |
|---|---|
| Carat | 1.59 |
| Color | M |
| Clarity | SI1 |
| Cut | Excellent |
| Type | Lab-grown |
| Certificate | IGI 11364520 |
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 |
|---|---|---|---|---|
| New World Diamonds | $680 | $428 | Lowest | — |
Facet Wire tracks 2485 round lab-grown diamonds; their median price is $560 per carat. This stone's lowest tracked price works out to $428 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 2026-10-21. Listings can sell or change price at any time; the retailer's own page is the final word at checkout.