mineral

Tumbled honey calcite

Calcite (calcium carbonate, CaCO₃)

AI-generated identification · may be incorrect

Pale honey-yellow, translucent to semi-transparent, with a glassy-to-pearly luster and visibly cloudy internal texture. Mohs hardness 3; rhombohedral crystal structure and perfect rhombohedral cleavage, though tumbling has rounded the surfaces.

Identified August 23, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed as hydrothermal or sedimentary carbonate in limestone, cave, or vein environments; calcite occurs from Precambrian to recent geological ages. The specimen has been cut and polished or tumbled.

Uses & applications

Used as an ornamental and lapidary stone, teaching specimen, and collectible; calcite is also the primary component of limestone used in cement, aggregate, and agricultural lime. It is too soft for durable everyday jewelry.

Geological facts

Calcite effervesces readily with dilute hydrochloric acid and shows strong birefringence, producing double images through clear pieces. Yellow coloration commonly results from iron or other trace impurities.

Field identification & locations

Commonly found worldwide in limestone deposits and hydrothermal veins, including Mexico, the United States, Brazil, and China. Identify it by its softness, rhombohedral cleavage, cloudy translucence, and acid reaction; do not confuse it with harder yellow quartz or fluorite.