Obsidian lithics (stone tools), found in Yellowstone National Park. Photo by the National Park Service/Jacob W. Frank. Public Domain.
Opaque Black Natural Glass Carved
Obsidian lithics (stone tools), found in Yellowstone National Park. Photo by the National Park Service/Jacob W. Frank. Public Domain.
Article: Obsidian Value, Price, and Jewelry Information
Credit: National Park Service
| Gemstone | Natural Glass, Obsidian, Artisanal Glass |
| Natural or man made | Natural |
| Gem State | Carved |
| Color | Black |
| Transparency | Opaque |