mineral

Rounded quartz pebble

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Small, pale translucent white pebble with a dull-to-waxy surface, likely water-worn; quartz hardness is 7 Mohs, vitreous when fresh, with no cleavage and conchoidal fracture. Its rounded form and faint inclusions suggest natural abrasion and weathering.

Identified September 2, 2026More mineral →

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Physical properties

Formation & geological history

Likely derived from quartz-rich igneous or metamorphic rock and transported by stream, beach, or glacial processes; its precise geological age cannot be determined from the image. The pebble itself may be much younger than its source rock.

Uses & applications

Common quartz pebbles are used decoratively, in landscaping, crafts, and aggregate; attractive clear specimens may be tumbled or made into jewelry. This small, opaque piece has minimal commercial value.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant, allowing it to survive long transport as rounded pebbles. The specimen could also be a fragment of milky quartz or quartz-rich vein material.

Field identification & locations

Look for hardness sufficient to scratch ordinary glass, lack of cleavage, and a white streak; avoid confusing it with glass, calcite, or a shell fragment. Common worldwide in river gravels, beaches, quartz veins, and weathered crystalline terrains.