mineral

Tumbled honey-colored calcite

Calcite (calcium carbonate, CaCO₃)

AI-generated identification · may be incorrect

Typically Mohs hardness 3, white to honey-yellow color, vitreous to pearly luster, and rhombohedral cleavage; the specimen appears polished or naturally smoothed and may show translucent banding. Crystal structure is trigonal.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Calcite forms in limestones, caves, hydrothermal veins, and sedimentary cavities through precipitation from carbonate-rich fluids; its age can range from recent cave deposits to rocks hundreds of millions of years old.

Uses & applications

Used in cement, lime, aggregate, soil treatment, and chemical manufacturing; attractive honey calcite is sold as a lapidary, décor, or metaphysical specimen rather than fine jewelry.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid and may display double refraction through clear areas. Its color commonly comes from iron, organic material, or other trace impurities.

Field identification & locations

Identify it by its softness, rhombohedral cleavage, and acid reaction; it is commonly found worldwide in limestone regions, especially Mexico, the United States, Brazil, and Europe. Avoid vinegar as a definitive test because the reaction may be weak.