mineral

Polished quartz crystal point

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 7; colorless to milky white with vitreous luster and internal veils/fractures. Trigonal crystal structure, typically lacking cleavage and showing conchoidal fracture; specific gravity about 2.65.

Identified September 12, 2026More mineral →

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Physical properties

Formation & geological history

Formed when silica-rich fluids crystallize in cavities, veins, or pegmatites, commonly during hydrothermal activity. The exact geological age and locality cannot be determined from the image; polishing and shaping are human processing.

Uses & applications

Used as a decorative specimen, in crystal collecting, and occasionally for metaphysical practices; quartz is also important in glass, ceramics, electronics, abrasives, and optical instruments.

Geological facts

The pointed form is likely cut and polished rather than a naturally terminated crystal. Cloudiness commonly results from microscopic fluid inclusions, fractures, or dispersed mineral impurities.

Field identification & locations

Identify quartz by its glassy luster, hardness sufficient to scratch ordinary glass, lack of cleavage, and six-sided crystal geometry; quartz points commonly come from Brazil, Madagascar, China, and Arkansas, USA.