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C575 - Helvite $ 950 SOLD Clark Mine, Rincon district, San Diego Co., California, USA thumbnail - 2.5 x 2.5 x 1.5 cm Pair of Helvite crystals on matrix from San Diego Co. There are 2 crystals, largest is 1cm on edge. These are rare for San Diego, or anywhere in California. Ex. Curtis Wilbur collection, and pictured on Mindat, photo number 638291. ©2010-2018 Marin Mineral |