mineral
Tumbled milky quartz pebble
Quartz (SiO₂)
AI-generated identification · may be incorrectSmall, smooth, opaque white-to-cream pebble with a vitreous-to-waxy luster. Quartz has Mohs hardness 7, a hexagonal crystal structure, no cleavage, and conchoidal fracture; the image does not show enough detail to confirm the identification definitively.
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Physical properties
Small, smooth, opaque white-to-cream pebble with a vitreous-to-waxy luster. Quartz has Mohs hardness 7, a hexagonal crystal structure, no cleavage, and conchoidal fracture; the image does not show enough detail to confirm the identification definitively.
Formation & geological history
Quartz formed as silica crystallized in veins or other rocks; the pebble’s rounded shape likely results from natural abrasion or tumbling. Quartz occurs in rocks of many geological ages.
Uses & applications
Commonly used in jewelry, crafts, decorative stones, and as a source of silica for glass and industrial materials.
Geological facts
Quartz is one of Earth’s most abundant minerals and is notably resistant to weathering, allowing it to persist in sediments and pebbles.
Field identification & locations
A white, hard pebble with glassy surfaces and no obvious cleavage is consistent with quartz; it is widespread worldwide. The pictured specimen may be a polished or naturally rounded quartz pebble.
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