mineral
Green aventurine pebble (likely)
Quartzite dominated by quartz (SiO₂), with green fuchsite mica inclusions
AI-generated identification · may be incorrectSmall, 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.
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Physical properties
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.
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.
