18 KT Yellow gold tanzanite and diamond ring. This beautiful ring contains a emerald cut natural tanzanite that has a weight of 2.25 Ct. Around the tanzanite are round shape natural diamonds with a total weight of 1.00 Ct. The diamonds are rated F color and VS1 clarity. The finger size of the ring is 6.75 and the total weight of gold is 8.3 grams.