metamorphic

Tumbled greenish quartzite or serpentine

Quartzite (mostly SiO₂) or serpentine-group rock

AI-generated identification · may be incorrect

Small rounded, polished pebble with pale green-gray color, earthy to weakly vitreous luster, and a granular/possibly fibrous texture. Likely hardness about 4–7 Mohs; exact identification requires hardness, streak, and specific-gravity tests.

Identified September 8, 2026More metamorphic →

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Physical properties

Formation & geological history

Probably a naturally weathered or tumbled metamorphic pebble formed by recrystallization or alteration of ultramafic rock; age and locality cannot be determined from the photograph.

Uses & applications

Commonly sold as a decorative tumbled stone or craft specimen; quartzite may be used as aggregate and dimension stone, while serpentine is mainly ornamental.

Geological facts

The pale green color could reflect chlorite, epidote, or serpentine rather than a single mineral. Surface texture and lighting prevent confident species-level identification.

Field identification & locations

Test an inconspicuous area: quartzite scratches glass and leaves a white streak; serpentine is softer, often waxy, and may feel unusually smooth. Common sources include metamorphic terrains worldwide.