Tanzanite, to today, is only located in the hills of Merelani in northern Tanzania. Considering that tanzanite can only be located in a five-mile strip of land, this December birthstone is definitely one particular thousand instances rarer than diamond! Tanzanite was added towards the list of birthstones for December in https://www.gemsbiz.com/blog/explore/the-december-birthstone-zircon-tanzanite-turquoise