mineral

Small natural quartz crystal, possibly iron-stained quartz

Quartz (SiO₂), trigonal crystal system

AI-generated identification · may be incorrect

Tiny, rough translucent-to-milky crystal with a honey-brown stained area and vitreous luster; Mohs hardness 7, no cleavage, conchoidal fracture, specific gravity about 2.65. The photo does not show enough detail for a confident variety identification.

Identified September 23, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich magma or hydrothermal fluids and also grows in cavities and veins; it occurs in rocks of many geological ages. Iron-oxide staining may account for the brown color.

Uses & applications

Quartz is widely used in glass, electronics, and construction; attractive crystals are collected or used in jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals and has piezoelectric properties, producing an electrical charge under pressure.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and lack of cleavage; common worldwide in veins, pegmatites, and geodes. The specimen’s exact locality and identity cannot be determined from the image alone.