metamorphic

Rounded quartzite pebble

Quartzite (predominantly recrystallized quartz, SiO₂)

AI-generated identification · may be incorrect

Pale cream to pinkish, matte and fine-grained with a rounded, water-worn shape. Quartz hardness is about 7 Mohs; quartzite has no prominent cleavage and a granular crystalline texture. Exact identification is uncertain from the image alone.

Identified September 25, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when quartz-rich sandstone was recrystallized by heat and pressure; its age depends on the source rock and metamorphic event. The smooth outline likely reflects prolonged transport or abrasion in water.

Uses & applications

Commonly used as decorative landscaping stone, aggregate, and paving material; this pebble is mainly suitable for collecting or decoration.

Geological facts

Quartzite is typically harder and more resistant to weathering than its sandstone precursor.

Field identification & locations

Look for a hard, gritty-to-glassy surface and grains that are fused rather than easily scraped away; it may occur in streambeds or beaches downstream of quartzite outcrops. A small common pebble typically has little market value, around $1–$10.