2.50 ct Round Natural diamond (I / SI1) — GIA certificate 5556814845
A 2.50 carat round natural diamond, I color, SI1 clarity, Affinity 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 | 2.50 |
| Color | I |
| Clarity | SI1 |
| Cut | Affinity |
| Type | Natural |
| Certificate | GIA 5556814845 |
Where this stone is listed Cert matched
This exact certificate is currently listed by 2 retailers in 2 listings. Lowest: $19,052 at Adiamor — $2,866 less than the highest tracked listing of this same stone.
| Retailer | Price | $/ct | vs lowest | Deal check |
|---|---|---|---|---|
| Adiamor | $19,052 | $7,621 | Lowest | Fair Price +5% vs median $/ct for identical specs · 39 stones |
| Frank Darling | $21,918 | $8,767 | +$2,866 | Overpriced +20% vs median $/ct for identical specs · 39 stones |
Facet Wire tracks 91061 round natural diamonds; their median price is $1,998 per carat. This stone's lowest tracked price works out to $7,621 per carat. This page is one of 981579 certificate pages Facet Wire maintains — one for every tracked certificate.
Price tracked by Facet Wire — updated daily. First tracked 2026-10-28. Listings can sell or change price at any time; the retailer's own page is the final word at checkout.