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Heated Vs Unheated Tanzanite; How to Tell Tanzanite Quality
Heated Vs Unheated Tanzanite Natural Tanzanite gemstone is a mix of gray, green, brown and blue color. The gem achieves its blue color through heat-treatment. Most of the Tanzanites we see in the market are heated. The big question is does heating affect Tanzanite quality? Heating can occur naturally before the gem is mined. The