This pear-shaped topaz (18.88 cts, Russia) has an unusual, coffee-brown color. It’s possible this was a white topaz turned brown by irradiation. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Brown Topaz, 18.88 ct Faceted, Irradiated from Russia
This pear-shaped topaz (18.88 cts, Russia) has an unusual, coffee-brown color. It's possible this was a white topaz turned brown by irradiation. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: Topaz Gem, Price, and Jewelry Information
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Topaz |
| Treatments | Irradiation |
| Natural or man made | Natural |
| Origin | Russia |
| Carat Weight | 18.88 |
| Gem State | Faceted |
| Color | Brown |
| Transparency | Transparent |