mineral
Polished honey calcite heart
Calcite (calcium carbonate, CaCO₃)
AI-generated identification · may be incorrectTypically honey-yellow to amber, translucent, and vitreous to pearly, with rhombohedral cleavage; Mohs hardness 3 and specific gravity about 2.71. The visible angular cleavage faces and internal cloudiness are characteristic of calcite.
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Physical properties
Typically honey-yellow to amber, translucent, and vitreous to pearly, with rhombohedral cleavage; Mohs hardness 3 and specific gravity about 2.71. The visible angular cleavage faces and internal cloudiness are characteristic of calcite.
Formation & geological history
Calcite precipitates from carbonate-rich groundwater, hydrothermal fluids, caves, and sedimentary environments; this piece was cut and polished into a heart. Calcite deposits range from ancient to modern geological ages.
Uses & applications
Used as an ornamental carving, decorative stone, educational specimen, and sometimes in metaphysical collections; too soft for most jewelry subjected to abrasion. Industrial calcite is important in cement, lime, agriculture, glass, and chemical production.
Geological facts
Calcite strongly effervesces with dilute hydrochloric acid and shows birefringence under polarized light. Honey coloration commonly results from iron or other trace impurities.
Field identification & locations
Identify by its soft hardness, rhombohedral cleavage, glassy luster, and acid reaction; common sources include Mexico, Brazil, Iceland, and the United States. Avoid acids and ultrasonic cleaning because polishing and cleavage are easily damaged.
