Beautiful White/ Black Chalcedony / Calcite Mineral

Beautiful White/ Black Chalcedony / Calcite Mineral - Arizona -

7.1 oz

Size 3" x 2.5" Approx

Chalcedony and calcite, while sometimes appearing similar,

are distinct minerals with different chemical compositions:

chalcedony is a cryptocrystalline form of silica, while calcite is

a form of calcium carbonate

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ITEM # 269