“Bluebird Necklace,” Swiss Blue topaz and zircon. Photo by Marianne Madden. Licensed under CC By-SA 2.0.
Blue Topaz Cabochon, Heat-Treated in Necklace
"Bluebird Necklace," Swiss Blue topaz and zircon. Photo by Marianne Madden. Licensed under CC By-SA 2.0.
Article: A Beginner’s Guide To Common Gemstone Heat Treatments
Credit: Marianne Madden
| Gemstone | Topaz |
| Treatments | Heat Treatment |
| Natural or man made | Natural |
| Jewelry type | necklace |
| Gem State | Cabochon |
| Color | Blue |
| Transparency | Transparent |