Own this gorgeous genuine tanzanite and Diamond ring, set in a 10k gold band, new with tags! Tanzanite is a rare gem that will only increase in value. **As far as the size, I purchased it several years ago and likely ordered it in a size 6 or size 7; I don’t recall exact size. Some facts about Tanzanite: Tanzanite is a rare gem. All of the known deposits are confined to a few square miles of land in northern Tanzania. It is the only gemstone with a large and growing popularity that has such a limited known supply. Some people believe that the currently known tanzanite resource could be depleted in just a few decades. Read more about the Gemstone of Transformation in this article: https://thecrystalalmanac.com/tanzanite/