3 High Quality Natural Optical Calcite Crystals Quartz 5.95 oz - From Brazil

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High Quality Natural 3 Optical Calcite Crystals - From Brazil (Lot 106)Crystals size approx. 1.10" across to approx. 1.80" acrossWeight combined 5.95 ozAbout CalciteCalcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite".All orders are shipped within one business day!100 % satisfaction guaranteed.If for whatever reason you are unhappy with your order, return for a full refund (buyer pay for return shipping)