This rare, exotic gem was first discovered by Portuguese prospector Manuel d’Souza in the Merelani Hills of Tanzania in 1967, in the shadow of majestic Mount Kilimanjaro. Although tanzanite is a relative newcomer to the gemstone market, it has made its mark on the jewelry world in a hurry. In fact, no recent gemstone discovery has had more of an impact.
The finest quality tanzanite is usually deep blue or violet, with few, if any, inclusions visible under magnification. Such stones are also exceptionally well-cut and polished. But color is the most important factor to consider when buying tanzanite.