mineral

Polished amethyst–green fluorite tower

Fluorite (CaF₂), likely with purple amethyst/quartz (SiO₂) zoning or surface coloration

AI-generated identification · may be incorrect

Translucent green and purple bands, vitreous luster, visible internal fractures, and a carved hexagonal-prism form. Fluorite has Mohs hardness 4, perfect octahedral cleavage, cubic crystals, and specific gravity about 3.18; quartz has hardness 7.

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Fluorite forms from hydrothermal fluids in veins and cavities, commonly alongside quartz; purple-green zoning reflects trace elements and changing growth conditions. The specimen is geologically old but its precise age cannot be determined visually.

Uses & applications

Primarily decorative and collectible; fluorite is used industrially for hydrofluoric acid, fluorine chemicals, and flux, while quartz is used in glass and electronics. This carved tower has modest ornamental value.

Geological facts

The purple-to-green color transition is characteristic of attractive zoned fluorite specimens, though the image cannot confirm whether the purple portion is fluorite or amethyst.

Field identification & locations

Identify by cubic cleavage and softness: a steel knife may scratch fluorite, while quartz will not. Common sources include China, Mexico, Mongolia, the United States, and England.