Tanzanite (Zoisite)
Heat treatment removes undesirable brown hues, leaving this gem a bright, pure blue. Photo courtesy of liveauctioneers.com and Avis Diamond Galleries.
Article: Common Gemstone Treatments Cheat Sheet
Credit: <span class="sellerName___29phr">Avis Diamond Galleries</span>
Gemstone | Tanzanite (Zoisite)Zoisite, |
Treatments | Heat Treatment |
Natural or man made | Natural |
Origin | Tanzania |
Jewelry type | Ring |
Gem State | Faceted |
Color | Blue |
Transparency | Transparent |