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ST402 - Dioptase on/in Quartz Reneville, Dem. Rep. of Congo thumbnail - 2.7 x 2.7 x 1.5 cm ![]() ![]() ![]() Cluster of clear Quartz crystals with Dioptase. The main Dioptase is 1.3cm long, double-terminated, with both ends extending out opposite sides of the Quartz cluster. Old, rare specimen. Dioptase, when included in Quartz crystals, make rare and valuable specimens. ©2010-2018 Marin Mineral |