Tanzanite is a rare stone coming from only one place in the world, the Merelani Hills of Tanzania, in the shadow of Mount Kilimanjaro. It is most known for it's deep, vibrant blue color, with hints of violet. Some stones appear more violet, and most will display both colors depending on the light source. Tanzanite is not a hard a stone like a diamond, ruby or sapphire, but more of a softer stone like an emerald or opal.