mineral

Polished green fluorite heart

Fluorite (calcium fluoride, CaF₂)

AI-generated identification · may be incorrect

Typically translucent olive-green to blue-green with vitreous luster and visible color zoning; Mohs hardness 4, cubic crystal system, perfect octahedral cleavage, and specific gravity about 3.18. The heart shape is human-cut and polished.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and carbonate-hosted deposits as fluids fill fractures, commonly alongside quartz, calcite, and lead-zinc minerals. Deposits range from Paleozoic to recent geological ages, depending on locality.

Uses & applications

Used industrially as a source of fluorine and flux in steel and aluminum production; transparent colorful material is cut into carvings, cabochons, and decorative hearts.

Geological facts

Fluorite often fluoresces under ultraviolet light, commonly blue, purple, green, or cream. Its strong cleavage makes it relatively easy to chip despite its attractive polish.

Field identification & locations

Identify by its softness, glassy luster, cubic cleavage, relatively high density, and possible UV fluorescence; avoid confusing it with glass or green calcite. Common sources include China, Mexico, England, Spain, and Illinois, USA.