mineral

Green glass-like mineral specimen, likely fluorite

Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass

AI-generated identification · may be incorrect

Likely translucent vivid green with vitreous luster and prominent cubic cleavage; fluorite has Mohs hardness 4 and specific gravity about 3.18. The strongly glassy, irregularly faceted appearance could alternatively be man-made glass, which is not geological.

Identified September 15, 2026More mineral →

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At a glance

Common name: Green glass-like mineral specimen, likely fluorite
Scientific name: Fluorite (calcium fluoride, CaF₂), if natural; appearance may also indicate colored glass
Category: mineral
Identified: September 15, 2026
Method: Standard

AI Estimated Value

Common fluorite: about $5–$30; attractive fluorescent or well-formed specimens: $50–$300+. If ordinary colored glass, typically under $5.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Natural green fluorite forms in hydrothermal veins, commonly with quartz, calcite, and sulfide minerals, from relatively low-temperature mineralizing fluids. Important deposits occur in China, Mexico, England, Illinois, and other regions.

Uses & applications

Fluorite is used as a flux in steel and aluminum production, in hydrofluoric-acid manufacture, and as a collector/gemstone specimen; transparent pieces may be faceted. If glass, it has no geological formation or mineral value.

Geological facts

Fluorite commonly occurs as cubes and octahedra and can fluoresce strongly under ultraviolet light. Green color may result from trace rare-earth elements or radiation-related defects.

Field identification & locations

Check for natural cubic cleavage, crystal faces, internal zoning, and UV fluorescence; fluorite scratches glass only weakly, while glass commonly shows conchoidal fracture. A definitive identification requires hardness, density, and preferably Raman or laboratory testing.