“Blue topaz,” irradiated, 21 mm diameter, Brazil, by Mauro Cateb is licensed under CC By 2.0
Blue Topaz Faceted, Irradiated
"Blue topaz," irradiated, 21 mm diameter, Brazil, by Mauro Cateb is licensed under CC By 2.0
Article: A Faceter’s Guide To Dark Saturated Rough Gems
Credit: Mauro Cateb
| Gemstone | Topaz |
| Treatments | Irradiation |
| Natural or man made | Natural |
| Width | 21 |
| Gem State | Faceted |
| Color | Blue |
| Transparency | Transparent |