mineral

Rounded quartz-rich pebble

Quartz (SiO₂), possibly a quartzite or light-colored chert pebble

AI-generated identification · may be incorrect

Pale cream, opaque to translucent, fine-grained, and weakly lustrous with a water-worn rounded shape. Quartz hardness is Mohs 7; quartzite is granular and very hard, with no cleavage and conchoidal to uneven fracture.

Identified August 13, 2026More mineral →

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Physical properties

Formation & geological history

Likely weathered from a quartz vein, quartzite, or silica-rich sedimentary rock and rounded by stream, beach, or glacial transport; its precise geological age cannot be determined from the image.

Uses & applications

Common quartz pebbles have little commercial value, while quartzite is used as aggregate, landscaping stone, and decorative material; attractive pieces may be used in crafts or collections.

Geological facts

The specimen appears natural and unpolished, but the image does not reveal diagnostic crystal faces or internal texture well enough for a precise species-level identification.

Field identification & locations

Look for glassy luster, extreme scratch resistance, and absence of cleavage; it should scratch ordinary glass but not be scratched by a steel knife. Common worldwide in river gravels, beaches, and glacial deposits.