mineral

Caribbean Calcite

Aragonite and Calcite (CaCO3)

Hardness: 3 on Mohs scale; Color: Light ocean blue and white/light brown; Luster: Vitreous to pearly; Crystal structure: Trigonal (Calcite) and Orthorhombic (Aragonite); Cleavage: Perfect rhombohedral.

Hardness: 3 on Mohs scale
Color: Light ocean blue and white/light brown
Luster: Vitreous to pearly

Identified May 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes involving the precipitation of calcium carbonate in marine or hydrothermal environments. This specific variety was recently discovered in Pakistan in 2019.

Uses & applications

Primarily used for decorative carvings, lapidary arts, and as a popular collector's specimen for those interested in metaphysical crystals.

Geological facts

Despite its name, it does not come from the Caribbean. It is a unique combination of blue calcite and white/tan aragonite with a distinctive 'beachy' appearance and often features small vugs or crevices.

Field identification & locations

Identify by its characteristic banded appearance and soft blue color. It reacts (effervesces) with weak acid like vinegar. Found predominantly in Pakistan.