mineral

Tumbled honey calcite (likely)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Translucent honey-yellow to amber, glassy/pearly luster, and commonly cloudy with internal fractures or cleavage traces. Mohs hardness 3; trigonal crystal system, perfect rhombohedral cleavage, specific gravity about 2.71; it effervesces in dilute hydrochloric acid.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Calcite forms in limestone, hydrothermal veins, caves, and sedimentary cavities through precipitation from carbonate-rich fluids. The polished specimen’s exact geological age and locality cannot be determined from the image.

Uses & applications

Used for cement, lime, aggregate, chemical production, and ornamental stone; transparent honey calcite is sold as a decorative or metaphysical carving material rather than a durable gemstone.

Geological facts

Its relatively soft surface scratches easily with a steel knife and can be dulled by acids. Honey coloration commonly reflects iron or other trace impurities, though similar-looking yellow aragonite or glass is possible without testing.

Field identification & locations

Likely calcite if it shows rhombohedral cleavage and vigorous acid bubbling; a knife should scratch it, while quartz should not. Common sources include Mexico, Brazil, Iceland, and the United States.