Description: Calcite with sand inclusions A French “super-classic”. Group of acute rhombohedral crystals of calcite that have grown including white sand. Bellecroix (Forêt), Fontainebleau, Seine-et-Marne, Ile-de-France, France Former Palix collection. Mined in the XIX Century Specimen size: 4.7 × 3.3 × 3 cm. Main crystal size: 1.7 × 1.5 cm. Photo from "Reference Specimens"

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