Price
Retail price for top color tanzanite:
Carat size from large to small
5 carats plus: $75-$1500/ct
1-3 carats: $75-$1200/ct
0.5-1 carat: $75-$500/ct
Main origin
The Merelani Hills in northern Tanzania is the only location where commercial mining of tanzanite takes place.
Imitation
Coranite – synthetic blue corundum, tanavyte – purple YAG, glass