mineral

Rounded quartz pebble

Quartz (SiO₂), possibly milky or smoky quartz

AI-generated identification · may be incorrect

Small tumbled/abraded pebble with pale gray-beige color, translucent edges, and dull to weakly glassy luster. Quartz has Mohs hardness 7, no cleavage, conchoidal fracture, hexagonal crystal structure, and specific gravity about 2.65.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Likely weathered from quartz-rich igneous or metamorphic rock and rounded by stream or beach transport; its precise geological age and source cannot be determined from the image.

Uses & applications

Common quartz pebbles are used in landscaping, crafts, collections, and occasionally jewelry; this specimen has minimal commercial value unless unusually clear or from a documented locality.

Geological facts

Quartz is one of Earth’s most abundant minerals and is highly resistant to chemical and physical weathering, allowing it to survive as rounded sediment.

Field identification & locations

Check for hardness by testing glass (quartz should scratch it), lack of cleavage, and translucent gray-white appearance; common worldwide in river gravels, beaches, veins, and quartz-rich rocks.