sedimentary

Rounded river pebble, likely quartz-rich sandstone

Quartz-rich sandstone (tentative; exact identification is limited from the image)

AI-generated identification · may be incorrect

Smooth, rounded, pale tan-pink pebble with a fine-grained, dull surface and small pits. Likely mostly quartz; hardness and specific gravity cannot be reliably determined visually.

Identified October 12, 2026More sedimentary →

Explore Rounded river pebble, likely quartz-rich sandstone in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Smooth, rounded, pale tan-pink pebble with a fine-grained, dull surface and small pits. Likely mostly quartz; hardness and specific gravity cannot be reliably determined visually.

Formation & geological history

Probably a sedimentary rock rounded by transport in a stream or along a shore; its original formation age and source are unknown.

Uses & applications

Primarily decorative or collectible; similar stone may be used in landscaping and crafts.

Geological facts

Its rounded shape and smoothed surface indicate prolonged abrasion during transport or weathering.

Field identification & locations

Look for a gritty texture or visible sand-sized grains to support sandstone identification; a simple visual inspection cannot establish composition with certainty. Pebbles occur in riverbeds, beaches, and glacial deposits worldwide.