Tanzanite is used for several different occasions: It serves as the universal birthstone, the December birthstone, and the new-mother’s stone. It comes in many shades of blue, lilac, and sometimes greenish and is mined in only one location, worldwide, at the foothills of Mt. Kilimanjaro, Tanzania. Look at this little pendant. Seven delicate genuine mauve tanzanite stones form a perfect flower, which, hanging from its bail, measures 5/8”. How pretty!