mineral

Green aventurine (likely)

Quartzite dominated by quartz (SiO₂) with fuchsite mica inclusions

AI-generated identification · may be incorrect

Typically Mohs 6.5–7; translucent to opaque green, vitreous to waxy luster, granular quartz texture, and no prominent cleavage. The smooth domed shape indicates a polished or tumbled specimen; faint sparkle may appear under strong light.

Identified September 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms when quartz-rich rock recrystallizes and incorporates chromium-bearing fuchsite or other green minerals, commonly in metamorphic environments. Geological ages vary by deposit, with important material from Proterozoic rocks in India and Brazil.

Uses & applications

Used for cabochons, beads, carvings, ornamental objects, and inexpensive jewelry; also sold as a decorative healing stone. It is less valuable than fine jade or emerald.

Geological facts

Green aventurine is often confused with jade, serpentine, and dyed quartz. Aventurine quartz is identified by its characteristic mica-induced aventurescence, though this example’s sparkle is not clearly visible.

Field identification & locations

Common sources include India, Brazil, Russia, Tanzania, and China. Check for granular texture, hardness sufficient to scratch glass, and mica glitter; definitive identification may require microscopy or refractive-index testing.