Unheated Natural Tanzanite Crystal
Collection
John Betts - Fine Minerals
Description
This is Tanzanite that is naturally colored and not heat treated. Virtually all Tanzanite heat treated to produce its fine color; this specimen shows how Tanzanite looks in its natural state, with a grayish-green to brownish tone. There are two different angles shown here in this photo which exhibit its different colors due to this mineral's strong pleochroism.
Locality
Merelani Hills, western slope of Lelatama Mountains, Arusha Region, Tanzania
Dimensions
16 x 10 x 6 mm.
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