Mining for Tourmaline Gemstone Becomes a Thrilling Mining Adventure
San Diego County and other mining areas in Southern California have been known for decades to be the center of mining for gems and minerals. Gems and minerals are found in Pegmatite rocks that lie deep below ground in molten rock, which is located in planet earth's crust. Tourmaline gemstone is derived from these rocks, which are capable of producing very large crystals too. Mining for tourmaline gemstone in Southern California becomes a thrilling mining adventure.