sedimentary
River Stone
Polished Quartzite Pebble
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, smooth rounded shape, vitreous luster, dense quartz composition.
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Physical properties
Hardness of 7 on the Mohs scale, smooth rounded shape, vitreous luster, dense quartz composition.
Formation & geological history
Formed through the mechanical weathering and prolonged fluvial transport of quartz-rich parent rock in riverbeds.
Uses & applications
Used in landscaping, decorative home displays, and as tumbling media or gemstone material.
Geological facts
Continuous tumbling by water abrasion removes sharp edges over thousands of years.
Field identification & locations
Commonly found in streambeds and beaches globally; identified by extreme smoothness and hardness.
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