The Gemma Claudia, a Roman five-layered onyx cameo, ca. 49 CE, from the collection of the Vienna Kunsthistorisches Museum, Austria. Photo by Carole Raddato. Licensed under CC By-SA 2.0.
Opaque White Chalcedony Carved
The Gemma Claudia, a Roman five-layered onyx cameo, ca. 49 CE, from the collection of the Vienna Kunsthistorisches Museum, Austria. Photo by Carole Raddato. Licensed under CC By-SA 2.0.
Article: Onyx Symbolism
Credit: Carole Raddato
| Gemstone | Quartz, Chalcedony, Onyx |
| Natural or man made | Natural |
| Gem State | Carved |
| Color | White, Brown |
| Transparency | Opaque |
| Multi-color | Bi-color |