Men’s ring featuring a black onyx. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opaque Black Chalcedony Other in Ring
Men's ring featuring a black onyx. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: Onyx Properties, Varieties, and Jewelry Information
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Quartz, Chalcedony, Onyx |
| Natural or man made | Natural |
| Jewelry type | Ring |
| Gem State | Other |
| Color | Black |
| Transparency | Opaque |