mineral

Polished pink calcite (likely a small cabochon or tumbled piece)

Calcite, CaCO₃

AI-generated identification · may be incorrect

Pale peach-pink, translucent to cloudy, with a vitreous-to-waxy polish; Mohs hardness 3, trigonal crystal system, perfect rhombohedral cleavage, and specific gravity about 2.7. The rounded shape and reflective surface indicate human polishing.

Identified October 12, 2026More mineral →

Explore Polished pink calcite (likely a small cabochon or tumbled piece) in the encyclopedia →

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Physical properties

Formation & geological history

Calcite forms in sedimentary and hydrothermal settings, including limestone and mineral veins; this specimen’s exact source and age cannot be determined from the image.

Uses & applications

Used as a decorative or collectible stone and sometimes in jewelry; calcite is also an important industrial source of lime and a component of cement and building stone.

Geological facts

Calcite effervesces in dilute acid and shows strong double refraction in clear crystals; it is not suitable for jewelry exposed to abrasion because it is soft.

Field identification & locations

Look for low hardness, rhombohedral cleavage, and acid reaction; pink calcite is found in deposits worldwide, including Mexico, Peru, and the United States. The image alone cannot confirm the mineral identification.