This important art deco ring has natural diamonds as well as sapphires. The central old cut diamond weighs 0.30ct each. Total weight of the diamonds is 1ct, and the sapphires weigh 2ct estimate total. It is hand made from platinum 850. The top face of the ring measures 15mm x 20mm This ring is a US size 7.75, UK size P 1/2, circumference 57mm The condition is very good as can be seen. WEIGHT 6.9 GRAMS