Calcite

Unknown Owner

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A showy, old-time specimen of calcite "cave pearls" or pisolites from a classic Czech locale - Carlsbad (Karlovy Vary), Bohemia. Pisolites are spheroidal, concentric concretions of calcium carbonate. Accompanied by an expertly handwritten, faded label from an older collection. The collection this came out of was a museum stash dating to prior to World War I.