Articles from June 2016

Zultanite, also known as Csarite®, is a rare color-change variety of diaspore found exclusively in Turkey. It is named for the sultan rulers who used to govern the region in the Anatolian mountains where it is sourced. When holding a zultanite gemstone in your hand, you will find it hard to describe its body color. The variety of colors produced by the gem and the distinct differences between them make it impossible for a single color description. But the GemePro™ analysis provided us with a practical solution.

Recently, with the appearance in the market of natural, rare untreated "fancy color" tanzanite gems (in colors other than blue and violet), a vivid debate has flared up amongst gemologists and traders alike. The hot-potato question is whether tanzanite can be defined as tanzanite even if they are in colors other than blue, or should they be called zoisite?