mineral

Rounded, weathered quartz-rich pebble (likely milky quartz)

Quartz, SiO₂; exact identification is uncertain from the photograph

AI-generated identification · may be incorrect

Cream to pale peach, opaque to slightly translucent, with a smooth water-worn surface and no obvious crystal faces. Quartz has Mohs hardness 7, vitreous luster when freshly broken, and no cleavage; the pebble’s specific gravity is about 2.65.

Identified September 28, 2026More mineral →

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Physical properties

Formation & geological history

Likely a quartz-rich fragment rounded by stream or beach transport; quartz commonly forms in igneous and metamorphic rocks and survives weathering. Its geological age cannot be determined from appearance alone.

Uses & applications

Quartz is used in glass, ceramics, electronics, and construction; attractive polished pieces are collected or used decoratively.

Geological facts

Quartz is one of Earth’s most abundant minerals and is notably resistant to chemical weathering.

Field identification & locations

Look for hardness sufficient to scratch glass, lack of cleavage, and a white streak; this rounded shape suggests transport, but a simple field test would help distinguish quartz from other pale pebbles. Quartz occurs worldwide in veins and many rock types.