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C557 - Spinel $ AT-AUCTION Big Maria mountains, Riverside County, California, USA cabinet - 13 x 10 x 8 cm Large 3cm black Spinel crystal on matrix with other smaller Spinel crystals. This is an old specimen from a collection from the 1960s and 70s that contained a number of excellent and uncommon California specimens. It occurs with Chlorite and appears to have been partially etched from carbonate rock. It rates as a significant California Spinel. Undamaged. ©2010-2018 Marin Mineral |