metamorphic

Rounded pebble, likely quartzite

Quartzite (predominantly recrystallized quartz, SiO₂)

AI-generated identification · may be incorrect

Smooth, oval, brown-tan pebble with a fine, slightly sparkly/granular surface; no visible cleavage. Quartz has Mohs hardness 7, vitreous luster when fresh, and specific gravity near 2.65; the image alone cannot confirm quartzite or distinguish it from other hard river stones.

Identified September 29, 2026More metamorphic →

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Physical properties

Formation & geological history

Likely rounded by transport in water or abrasion. Quartzite forms when quartz-rich sandstone is metamorphosed; its age and source cannot be determined from the photograph.

Uses & applications

Commonly used as decorative stone, landscaping aggregate, and construction material; this small pebble has little commercial value.

Geological facts

Quartzite is generally hard and resistant to weathering, so it can persist as a rounded pebble after softer surrounding rocks wear away.

Field identification & locations

The specimen’s smooth shape and uniform appearance are consistent with a water-worn pebble, but a fresh broken surface or hardness test is needed for identification. The reported Ethiopian location is broadly compatible with varied regional rocks, but does not establish provenance.