Tanzanite (Zoisite) Value
Faceted - Top Color: vB 6/5
Accompanying value information:
The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.
In general, tanzanites showing more blue are valued higher than those showing more violet. Medium dark colors are the ideal. Custom cuts add value. As always, size and clarity have a strong effect on prices. Large clean rough is extremely scare.
Ultra-rare cat’s eye tanzanites are highly prized.
Among other varieties of zoisites, extremely rare green zoisites are highly sought by collectors. These are sometimes confusingly referred to as “green tanzanite.”
See our tanzanite buying guide for more detailed value information.