mineral

Tumbled/polished quartz crystal point

Quartz — silicon dioxide (SiO₂), likely a pale smoky or milky variety

AI-generated identification · may be incorrect

Mohs hardness 7; translucent gray-beige body, vitreous luster, and hexagonal crystal structure. The pointed shape and internal planar textures are consistent with quartz, though the image cannot confirm exact variety or treatment.

Identified September 17, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids, pegmatites, and igneous cavities over geologic time, commonly from Precambrian to younger formations. This specimen appears cut or polished rather than naturally terminated.

Uses & applications

Used as a decorative or metaphysical specimen, in jewelry, and as a collector crystal; quartz is also important industrially in glass, electronics, ceramics, and abrasives.

Geological facts

Quartz has no cleavage but breaks conchoidally and commonly shows twinning or growth zoning. Its apparent internal lines may be inclusions, fractures, or polishing marks.

Field identification & locations

Identify by its glassy luster, hardness, lack of cleavage, and inability to scratch it with a steel knife; glass should not scratch it. Common sources include Brazil, Madagascar, the United States, and China.