SHAY MEN'S COLOMBIAN EMERALD SIGNET RING This item is in stock and ready to ship in 1 - 3 days. Details: 18-karat gold Green Emerald: approx 8.58 cts Size: 11.8mm Natural stones only Product Number: SMR57 Looking for something bespoke? Contact us . Slight variations in color, shape, and size are part of their beauty.