Named for its country of origin, this vivid violetish blue variety of the mineral species zoisite burst onto the gemstone scene in the late 1960’s. Smaller stones tend toward lighter tones while larger stones typically display deeper color. Tanzanite is always heated to permanently change its color from brown to its signature violet/blue. Designated as the December birthstone and 24th wedding anniversary. Tanzanite is mined only in Tanzania.
Tanzanite - Oval
AA: Very fine deep blue color and is eye clean A: Ranges from medium violet blue to a deeper violet blue to blue color and is eye clean B: Ranges from a light violet blue color with eye visible inclusions to a medium violet blue color with minor inclusions