mineral

Blue Aragonite (polished)

Aragonite (CaCO3)

AI-generated identification · may be incorrect

Hardness 3.5-4, light blue to pale greenish-blue color with white banding or mottling, vitreous to resinous luster, typically massive or stalactitic when polished into shapes.

Identified September 19, 2026More mineral →

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Physical properties

Hardness 3.5-4, light blue to pale greenish-blue color with white banding or mottling, vitreous to resinous luster, typically massive or stalactitic when polished into shapes.

Formation & geological history

Forms in low-temperature environments, often as cave stalactites, stalagmites, or hot spring deposits. Commonly forms as a precipitate in marine or freshwater environments.

Uses & applications

Commonly used for ornamental carving, lapidary items such as spheres, eggs, and tumbled stones, and in crystal healing/metaphysical practices.

Geological facts

Aragonite is a polymorph of calcium carbonate, meaning it has the same chemical formula as calcite but a different crystal structure. It is less stable than calcite and can alter to it over geological time.

Field identification & locations

Identified by its distinctive pale blue color, white cloudy inclusions, and relative softness (can be scratched by a knife). Readily effervesces in dilute hydrochloric acid.