Square-cabbed onyx, 3.58 cts, 10.15 mm, Brazil. © Rob Lavinsky, www.mineralauctions.com. Used with permission.
Opaque Black Chalcedony, 3.58 ct Cabochon from Brazil
Square-cabbed onyx, 3.58 cts, 10.15 mm, Brazil. © Rob Lavinsky, www.mineralauctions.com. Used with permission.
Article: Onyx Properties, Varieties, and Jewelry Information
Credit: www.mineralauctions.com
| Gemstone | Quartz, Chalcedony, Onyx |
| Natural or man made | Natural |
| Origin | Brazil |
| Carat Weight | 3.58 |
| Height | 10.15 |
| Width | 10.15 |
| Gem State | Cabochon |
| Color | Black |
| Transparency | Opaque |