mineral

Tumbled honey calcite (likely)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

A translucent cream-to-honey specimen with a vitreous-to-pearly luster and visible internal cleavage/fracture. Mohs hardness 3, rhombohedral crystal structure, perfect rhombohedral cleavage, and specific gravity about 2.71; it may fluoresce under ultraviolet light.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Calcite forms in sedimentary limestones, hydrothermal veins, caves, and metamorphic marbles through precipitation or recrystallization. The rounded shape indicates human tumbling and polishing; its exact geological age and locality cannot be determined from the image.

Uses & applications

Used in cement, lime, aggregate, soil treatment, and chemical industries; clear or attractively colored pieces are sold as lapidary and decorative specimens. It is generally inexpensive as a tumbled stone.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid or vinegar, unlike quartz. Honey coloration commonly results from iron or other trace impurities, while internal amber patches may be enhanced by transmitted light.

Field identification & locations

Common worldwide, especially in limestone regions and hydrothermal deposits. Confirm with a steel knife scratch and acid fizz test; avoid acid if preservation is important.