California Counties, Their Stones-Gems-Minerals
ProspectorPete.com
California Gem, Stone and Mineral Locations by County
Gem Locations in the US
Disclaimer: This is a list of known previous locations of Gems or Minerals found either recently or in the past. It is recommended you research further to find exact locations or mining properties to give you a better idea of where to start your search. As we get more information, we will post it here. Please check our online blog or join our Treasure Buddy Network (coming soon) for local information.
Alameda - Agate
Alpine - Agate
Amador - Diamond, Rhodonite
Claveras - Agate, chalcedony, chrysoprase,
petrified wood, quartz crystal
Colusa - Travertine
Contra Costa - Agate,Chalcedony
Del Norte - Agate, Jasper, petrified wood,
El Dorado - Agate Garnet, Idocrase, jasper, nephrite, petrified wood, vesuvianite
Fresno - Chert, jasper, petrified wood, smoky quartz
Humbolt - Agate, jade, jasper, petrified wood
Imperial - Agate, andalusite, chalcedony, dumortierite, garnet, jasper, kyanite, opal,
petrified wood, petrified palm root
Inyo - Agate, amethyst, bloodstone, epidote, garnet, geode, jasper, obsidian, onyx
opal, quarz crystal, turquoise
Kern - Actinolite, agate, colemanite crystal, jade, jasper, morrisonite, petrified wood
quartz crystal, rose quartz
Lake - Jasper, onyx, quartz crystal
Los Angeles - Agate, chalcedony, jasper, rhodonite
Madera - Chiastolites, garnet
Marin- Agate, jade, petrified whalebone
Mariposa - Quartz crystal
