PLATINUM & 18K GOLD DIAMOND & SAPPHIRE RING: 18K and platinum ring contains one old European round cut diamond and thirty rose cut diamonds. Weight: .30 Ct. Approx. The diamonds average VS-SI in clarity and H-I in color. Eighteen square calibr‚ cut sapphires of unknown origin. One sapphire is missing. The diamonds are knife and bead set. The sapphires are channel set. Weight: 1.8 grams. Size: 4 Circa: 1920's