Pleonaste on Diopside - Gon phlogopite deposit, Sakha, Russia
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Pleonaste on Diopside
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Black multi-faced pleonaste crystals arranged nicely on a cluster of green diopside crystals with a nice matte wave-like texture. Some remains of calcite are present.
, color range from ruby red to cobalt blue, sharp octahedral form, hardness 8, rare gemmy crystals on marble, prized by collectors for rarity and luster.
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