Biggs jasper. Photo by Deidre Woollard. Licensed under CC By 2.0.
Opaque Brown Chalcedony Other
Biggs jasper. Photo by Deidre Woollard. Licensed under CC By 2.0.
Article: A Guide to Gem Classification
Credit: Deidre Woollard
| Gemstone | Quartz, Chalcedony, Jasper |
| Natural or man made | Natural |
| Gem State | Other |
| Color | Brown |
| Transparency | Opaque |