mineral

Green aventurine pebble (likely)

Quartzite dominated by quartz (SiO₂), with green fuchsite mica inclusions

AI-generated identification · may be incorrect

Small, smoothly tumbled, opaque olive-green specimen with a matte-to-waxy luster. Quartz hardness is about 7 Mohs; aventurine commonly has granular texture and subtle glitter, though none is obvious here.

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Aventurine forms when quartz-rich rock recrystallizes and incorporates green fuchsite or other minerals, typically during metamorphism. Its exact age and source cannot be determined from the photograph.

Uses & applications

Used for inexpensive cabochons, beads, carvings, ornamental stone, and tumbled specimens. This small piece has modest commercial value.

Geological facts

The name refers to aventurescence, a reflective sparkle caused by platy mineral inclusions. Uniform green material may also be serpentine, jasper, or dyed quartz, so visual identification is provisional.

Field identification & locations

Common sources include India, Brazil, Russia, and Tanzania. Confirm with a hardness test, streak, magnification, and specific gravity; natural aventurine usually leaves no colored streak and resists steel.