PERIOD SAPPHIRE & DIAMOND RING CA. 1915-1925: Platinum ring centers a single round mixed cut 2.5 Ct. sapphire, rated VS in clarity (Type II), slgB in Hue, 7 in Tone and 3 in Saturation. This fabulous setting also contains 38 early single cut diamonds. Weight: .25 Ct. Approx. The diamonds average VS-SI in clarity and H-I in color. The sapphire is prong set, diamonds are bead set. The sapphire is loose in the setting. Weight: 4.3 grams. Size: 6