Elegant cluster ring with nine genuine tanzanite stones! The stones are 2.7mm each and total carat weight is 0.72 carats. The size of the cluster is approximately 14x9mm. The stones are set in a rhodium-plated sterling silver prong setting. ABOUT TANZANITE - A stone of composure, poise and optimism, tanzanite is a geological phenomenon that is 1000 times more rare than diamonds! Said to be an immune booster that encourages regeneration of skin, hair, and cells. ABOUT RHODIUM FINISH: Rhodium is hard-wearing and non-tarnish. It is the same metal used to plate white gold, and costs more per ounce than most other metals, including gold and platinum!