mineral

Likely fluorite sphere

Fluorite (calcium fluoride, CaF₂)

AI-generated identification · may be incorrect

Pale gray-green, translucent sphere with a vitreous luster and apparent internal color zoning or a fracture. Hardness 4 Mohs, cubic crystal system, perfect octahedral cleavage, and specific gravity about 3.18.

Identified September 4, 2026More mineral →

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Physical properties

Formation & geological history

Fluorite forms mainly in hydrothermal veins and cavities associated with limestone, dolostone, and igneous rocks. It occurs from many geological ages; the polished sphere obscures its original crystal form.

Uses & applications

Used as a flux in steel and aluminum production, in hydrofluoric-acid manufacture, and occasionally as a decorative or collectible stone. Spheres are ornamental rather than high-value jewelry items.

Geological facts

Fluorite commonly fluoresces blue, purple, green, or cream under ultraviolet light, though fluorescence is not guaranteed. Its cubic cleavage and relatively low hardness distinguish it from quartz.

Field identification & locations

Common localities include China, Mexico, the United Kingdom, the United States, and South Africa. A scratch test against steel or glass and an ultraviolet-light test can help, but visual identification from the photo is not definitive; it could also be a pale calcite or quartz sphere.