Tanzanite is the name given to the blue or purple variety of zoisite found only in Tanzania. Zoisite is a mineral of above average hardness, about 6.5 on the Mohs scale, and appears in a range of colors, such as blue, green, brown, pink, and colorless. In Tanzania, tanzanite is mined in the Merelani Hills. The rarity and exclusiveness of tanzanite might seem like an exaggeration, but only Tanzania produces blue zoisite of such quality. Now, it must be remembered that any blue or purple colored zoisite could be called tanzanite, although it may never have originated from Tanzania, just
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