sedimentary

Rounded pale pebble, likely quartz-rich rock

Indeterminate; possibly quartzite or weathered limestone

AI-generated identification · may be incorrect

Off-white to beige, dull to slightly waxy luster, fine-grained and heavily rounded; apparent hardness roughly 3–7 Mohs depending on composition. No visible crystals or cleavage can be confirmed from the image; dark speckling and surface weathering are present.

Identified August 24, 2026More sedimentary →

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Physical properties

Formation & geological history

Likely a naturally water-worn pebble formed by erosion and transport in a stream, beach, or glacial deposit; its original rock may be quartzite, limestone, or another light-colored lithology. Geological age cannot be determined visually.

Uses & applications

Typically of little commercial value, though suitable for landscaping, crafts, or casual collecting; it is not identifiable as a jewelry-grade gemstone from this photograph.

Geological facts

The smooth elongated shape indicates prolonged abrasion. A steel scratch test, vinegar reaction, and streak or specific-gravity testing would help distinguish quartzite from limestone.

Field identification & locations

Common in river gravels, beaches, and glacial tills. Quartzite resists scratching and does not fizz in vinegar; calcitic limestone is softer and fizzes with dilute acid, while a hand lens may reveal grains or fossils.