Sapphire from Riverside County, California, USA
USA | |
| Webb, R. W. 1942. Two Andalusite Pegmatites from Riverside County, California. The American Mineralogist. 28(11-12):581-593. |
| Murdoch, J., and Webb, R. W. 1942. Notes of Some Minerals from Southern California, III: Corundum and Associated Minerals near Banning, San Jacinto Mountains, California. The American Mineralogist. 27(4):328-329. |
Murdoch, J., and Webb, R. W. 1942. Notes of Some Minerals from Southern California, III: Corundum and Associated Minerals near Banning, San Jacinto Mountains, California. The American Mineralogist. 27(4):328-329. |
Unnamed Corundum occurrences [2], Soboba Hot Springs, San Jacinto Mountains, Riverside County, California, USA