Corundum from Wyoming, USA
USA | |
| Rocks & Minerals 76:382 |
| Rocks & Minerals 76:386 |
Rocks & Minerals 76:386 | |
Rocks & Minerals (2001): 76: 387. | |
| Rocks & Minerals 76:386 |
| Rocks & Minerals 76:389 |
USA | |
| Rocks & Minerals 76:382 |
| Rocks & Minerals 76:386 |
Rocks & Minerals 76:386 | |
Rocks & Minerals (2001): 76: 387. | |
| Rocks & Minerals 76:386 |
| Rocks & Minerals 76:389 |