“Tanzanite Roses,” hand engraved pendant, 18k gold, white and blue diamonds, and tanzanite. Jewelry and photo by Jessa and Mark Anderson. Licensed under CC By 2.0. (Read our article on practice faceting to see a test version of this pendant made with a “cobalt blue” lab-created quartz).
Blue Tanzanite (Zoisite) Faceted Oval Cut, Heat-Treated in Brooch
"Tanzanite Roses," hand engraved pendant, 18k gold, white and blue diamonds, and tanzanite. Jewelry and photo by Jessa and Mark Anderson. Licensed under CC By 2.0. (Read our article on practice faceting to see a test version of this pendant made with a "cobalt blue" lab-created quartz).
Article: A Beginner’s Guide To Common Gemstone Heat Treatments
Credit: Jessa and Mark Anderson
| Gemstone | Tanzanite (Zoisite), Zoisite |
| Treatments | Heat Treatment |
| Natural or man made | Natural |
| Jewelry type | Brooch |
| Gem State | Faceted |
| Color | Blue |
| Transparency | Transparent |