mineral

Carved white translucent mineral specimen

Likely calcite (CaCO₃), possibly milky quartz (SiO₂)

AI-generated identification · may be incorrect

White to translucent, vitreous-to-waxy luster, with rounded human-carved surfaces and minor pits. Calcite has Mohs hardness 3, rhombohedral cleavage, and specific gravity ~2.71; quartz is harder (7), lacks cleavage, and has specific gravity ~2.65.

Identified August 28, 2026More mineral →

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Physical properties

Formation & geological history

Likely a polished or carved piece of natural mineral rather than a raw rock; calcite commonly forms in limestone cavities, hydrothermal veins, and caves, while quartz forms in igneous and hydrothermal environments. Its precise geological age cannot be determined visually.

Uses & applications

Used as an ornamental or novelty carving; calcite is also an industrial source of lime and aggregate, while quartz is used in glass, electronics, abrasives, and jewelry.

Geological facts

The image alone cannot distinguish calcite from quartz confidently. A calcite piece may fizz with dilute hydrochloric acid, whereas quartz will not and should scratch glass.

Field identification & locations

Check hardness, cleavage, and acid reaction: calcite scratches with a steel knife and cleaves readily; quartz scratches glass and commonly shows conchoidal fracture. Common sources include Mexico, Brazil, China, and the United States.