Semiprecious Gemstone Mines in California
68Total Sites
3Active
Semiprecious Gemstone Mining in California
California has 68 semiprecious gemstone-related mine and mineral deposit locations recorded in federal databases. Of these, 3 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
By County
| County | Sites |
|---|---|
| San Diego County | 26 |
| San Bernardino County | 21 |
| Imperial County | 8 |
| Los Angeles County | 4 |
| Kern County | 3 |
| Riverside County | 3 |
| Inyo County | 1 |
| Monterey County | 1 |
| Tulare County | 1 |
Semiprecious Gemstone Mines
| Mine | County | Type | Status |
|---|---|---|---|
| San Pedro Mine | San Diego | Producer | |
| Sycamore Mines | Riverside | Producer | |
| White Queen | San Diego | Producer | |
| A. B. C. Mine | San Diego | Surface-Underground | Past Producer |
| Allen-Beal Deposit | Imperial | Occurrence | |
| American Opal Co. Prospect | San Bernardino | Surface-Underground | Prospect |
| Anita Mine | Riverside | Surface-Underground | Past Producer |
| Blue Gem Prospect | Tulare | Surface | Prospect |
| Boron Dry Lakes | Kern | Unknown | |
| Cable | San Diego | Past Producer | |
| Cape Point | San Bernardino | Underground | Prospect |
| Cape San Martin | Monterey | Surface | Prospect |
| Chut Turquoise | San Bernardino | Surface | Past Producer |
| Clark Extension Prospect | San Diego | Surface | Past Producer |
| Collector's Locality | Los Angeles | Occurrence | |
| Cota Mine | San Diego | Surface | Past Producer |
| Crystal Gem Mine | San Diego | Surface | Prospect |
| Dumortierite Occurrence | Imperial | Occurrence | |
| Dumortierite Occurrence | Imperial | Occurrence | |
| Elder Canyon Deposits | San Diego | Surface | Past Producer |
| French Pete | San Diego | Surface-Underground | Past Producer |
| Glory Bee Group Sec. 01 | San Bernardino | Surface | Past Producer |
| Green Ledge Mine | San Diego | Surface | Past Producer |
| Hauser Beds | Imperial | Occurrence | |
| Hercules Prospect | San Diego | Surface-Underground | Past Producer |
| Himalaya Mine | San Diego | Underground | Past Producer |
| Indian Pass Area | Imperial | Occurrence | |
| Juan Diego Mine No. 2 | Riverside | Underground | Prospect |
| Little Sand Spring Agate | Inyo | Occurrence | |
| Little Three Mine | San Diego | Surface | Past Producer |
| Lookout Prospect | San Diego | Surface | Past Producer |
| Lost Valley Tourmaline Prospects | San Diego | Occurrence | |
| Lost Valley Truck Trail Mine | San Diego | Surface-Underground | Past Producer |
| Maple Lode Mine | San Diego | Underground | Past Producer |
| Mesa Grande Mine | San Diego | Surface-Underground | Past Producer |
| Moonshine Spring Project | San Bernardino | Underground | Prospect |
| Opal Mountain Agate Field | San Bernardino | Surface | Prospect |
| Payne Mine | San Diego | Surface | Past Producer |
| Potato Patch | Imperial | Past Producer | |
| Potato Patch Beds | Imperial | Occurrence | |
| Prospect | San Diego | Surface | Prospect |
| Red Rock Canyon | Kern | Surface | Prospect |
| Redondo Beach Chalcedony | Los Angeles | Occurrence | |
| Reluctant Queen | San Bernardino | Underground | Past Producer |
| Ribbon Rock | San Bernardino | Surface | Prospect |
| Roaring Ridge | Kern | Surface-Underground | Prospect |
| Santa Catalina Island Moonstones | Los Angeles | Surface | Past Producer |
| Sonny Boy Claim | San Diego | Underground | Prospect |
| Stewart Jasper Deposit | Los Angeles | Occurrence | |
| Stewart Mine | San Diego | Underground | Past Producer |
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