mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent, with a vitreous-to-dull luster and no cleavage. Quartz has a trigonal crystal structure, though this rounded pebble shows no distinct crystal faces.

Identified October 4, 2026More mineral →

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Physical properties

Hardness 7 Mohs; white to translucent, with a vitreous-to-dull luster and no cleavage. Quartz has a trigonal crystal structure, though this rounded pebble shows no distinct crystal faces.

Formation & geological history

Likely a naturally rounded fragment worn by water or waves from quartz-rich rock; quartz formed in many geological settings and occurs in rocks of widely varying ages.

Uses & applications

Quartz is used in glassmaking, electronics, and decorative objects; this pebble is mainly suitable for collecting or landscaping.

Geological facts

The cloudy appearance comes from tiny fluid or gas inclusions and internal fractures that scatter light.

Field identification & locations

Milky quartz is common worldwide in veins and quartz-rich rocks; its hardness and lack of cleavage help distinguish it from softer white minerals. The image does not reveal its precise source.