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Gem Mining In California

benitoite gem mine, san benito county, california ,the benitoite gem mine in san benito county, california is the world's only commercial source for gem benitoite. benitoite has a very high index of refraction (ir) .gem hill, mesa grande mining district, san diego county ,gem hill, mesa grande mining district, san diego county, california, usa : summary: gem hill is a gentle sloping geographic feature with an elevation of .rare gems, minerals, and fossils in california,california has a large variety of valuable gems and minerals, in addition to its famous history of gold mining. some of the areas where one can look for jade are willow creek, gem cove, san simeon, jade cove and sand dollar'll love digging for crystals at this unique northern ,in fact, there's one destination in northern california that has become the mine is a true hidden gem and it makes for a wonderful place to .

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