mineral

Blue Calcite (commonly sold as Caribbean Calcite)

Calcium Carbonate (CaCO3)

AI-generated identification · may be incorrect

Hardness: 3 on Mohs scale; Color: Pale blue to turquoise mixed with brown or white; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71

Hardness: 3 on Mohs scale
Color: Pale blue to turquoise mixed with brown or white
Luster: Vitreous to waxy

Identified May 17, 2026More mineral →

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Physical properties

Hardness: 3 on Mohs scale; Color: Pale blue to turquoise mixed with brown or white; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71

Formation & geological history

Formed through sedimentary processes or as a secondary mineral in igneous rocks via precipitation from calcium-rich hydrothermal solutions. This specific variety often comes from relatively recent deposits in coastal regions such as Pakistan.

Uses & applications

Primarily used for decorative purposes, lapidary arts (spheres, carvings), and as a collector's specimen. It is also popular in the metaphysical and holistic community.

Geological facts

The 'Caribbean Calcite' variety is a combination of blue calcite and light brown/white aragonite, discovered fairly recently (circa 2019). Despite its name, most high-quality supply currently comes from Pakistan rather than the Caribbean.

Field identification & locations

Identify by its characteristic soft blue hue and susceptibility to scratching with a copper coin (3 Mohs). It will effervesce (bubble) if exposed to weak acids like vinegar.