“London Blue” topazes, irradiated and heated, approximately 8 cts each. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Blue Topaz, 8 ct Faceted Asscher Cut, Irradiated
"London Blue" topazes, irradiated and heated, approximately 8 cts each. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: What are Gemstone Enhancements?
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Topaz |
| Treatments | Irradiation |
| Natural or man made | Natural |
| Carat Weight | 8 |
| Gem State | Faceted |
| Color | Blue |
| Transparency | Transparent |