18K GOLD COBALT ENAMEL AND 1.75 CTW DIAMOND RING: 18K yellow gold ring with cobalt guilloche enamel. The enamel has been repaired on one side near shank. The enamel is missing on the other side near shank. 18K white gold trim contains 37 round brilliant cut diamonds. Weight: 1.75 Ct. Approx. Rated VS in clarity and G-H in color. High profile dome. Weight: 16.1 grams. Size: 7.5