Top 10 Rarest Gemstones in the world

1. Tanzanite

Tanzanite is an exotic gemstone found in one location on earth near the hills of Merelani in nothern Tanzania. It’s a recent discovery, found in 1967 by Manuel d’Souza. Tanzanite is a member of the mineral family Zoisite.

In addition, it’s the birthstone for December and for the 24th anniversary. Also, these rare gemstone resembled the Kashmir sapphire in color.