Gemmology
English | Български
Where am I? > Home > Classification > Tanzanite


Quick navigation selector

Tanzanite

A variety of zoisite with a blue to blue-violet colour. Nearly all tanzanites on the market have been heat-treated to produce this colour. First reported from the Merelani, Lelatema Mts, Manyara, Tanzania.

See:
Tanzanite — specimen 0383
Tanzanite — specimen 0383, photo © NMNHS

Material from ‘Repository’

6 specimens: 0235 — 1.20 ct, Tanzania, Manyara, Lelatema Mountains, Merelani; 0363 — 1.12 ct, Tanzania, Manyara, Lelatema Mountains, Merelani; 0383 — 0.54 ct, Tanzania, Manyara, Lelatema Mountains, Merelani; 0220 — 1.13 ct, Tanzania, Manyara, Lelatema Mountains, Merelani; 0281 — 1.03 ct, Tanzania, Manyara, Lelatema Mountains, Merelani; 0460 — 1.06 ct, Tanzania, Manyara, Lelatema Mountains, Merelani.


Gallery view