metamorphic

Small pale-gray stone, likely a water-worn quartzite or chert pebble

Undetermined; possibly quartzite (predominantly SiO₂)

AI-generated identification · may be incorrect

Fine-grained, pale gray to white, with a matte surface and rounded, flattened shape. Hardness and crystal structure cannot be confirmed from the image; quartz-rich material is typically Mohs 7.

Identified October 15, 2026More metamorphic →

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Physical properties

Fine-grained, pale gray to white, with a matte surface and rounded, flattened shape. Hardness and crystal structure cannot be confirmed from the image; quartz-rich material is typically Mohs 7.

Formation & geological history

If quartzite, it formed when quartz sandstone was metamorphosed under heat and pressure; its age and precise origin cannot be determined visually.

Uses & applications

A small pebble may be kept as a collectible or used decoratively; no specific industrial use can be established from the image.

Geological facts

The smooth, flattened form is consistent with abrasion during transport or shoreline wear, though the setting is not identifiable.

Field identification & locations

A close-up or hardness test is needed for reliable identification; quartz-rich pebbles commonly occur in river gravels and beaches. Estimated value: under $1 as an ordinary pebble.