mineral

Likely small quartz pebble

Quartz (SiO₂), possibly a weathered quartz-rich rock fragment

AI-generated identification · may be incorrect

Cream-white, opaque to slightly translucent, with a dull to weakly vitreous luster and rounded tumbled/worn shape. Quartz has Mohs hardness 7, no cleavage, hexagonal crystal structure, and specific gravity about 2.65.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Most likely eroded from quartz vein material or quartz-rich sandstone and naturally rounded during transport; its exact geological age and source cannot be determined from the image.

Uses & applications

Quartz is widely used in glass, ceramics, electronics, abrasives, and construction aggregate; attractive pieces may be sold as inexpensive tumbled stones.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly survives weathering because of its hardness and chemical resistance.

Field identification & locations

Identify it by hardness— it should scratch ordinary glass—and by its lack of cleavage, pale color, and glassy fracture. Common sources include river gravels, beaches, quartz veins, and quartz-rich sediments.