18K DEMANTOID GARNET AND DIAMOND RING: 18K yellow gold ring contains one checkerboard demantoid garnet. Weight: 2.50 Ct. Approx. 12 round full cut diamonds. Weight: 12 Ct. Approx. Rated SI in clarity and H-I in color. The diamonds and garnet are prong set. Mounting weight: 10.0 grams approx. Size: 7