mineral

Green aventurine quartz (probable)

Quartz, silicon dioxide (SiO₂), with disseminated green mica/fuchsite inclusions

AI-generated identification · may be incorrect

Translucent pale green-gray, vitreous to dull luster, granular texture, and no obvious cleavage; quartz hardness is about 7 Mohs and specific gravity about 2.65. The rounded edges indicate natural weathering or light tumbling.

Identified August 12, 2026More mineral →

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Physical properties

Formation & geological history

Forms in silica-rich hydrothermal veins and metamorphic rocks when quartz crystallizes around chromium-bearing fuchsite or other green inclusions. Most commercial material comes from India, Brazil, Russia, and Zimbabwe; exact age depends on its host formation.

Uses & applications

Used for cabochons, beads, carvings, tumbled stones, ornamental objects, and inexpensive specimens. It is less commonly used as an industrial quartz source because of its inclusions.

Geological facts

The green color and subtle glitter, called aventurescence, come from reflective mica particles; strong glitter usually indicates aventurine rather than plain green quartz.

Field identification & locations

Identify it by its green translucent body, quartz-like hardness, and occasional mica sparkle; it should scratch ordinary glass but not be scratched by a steel knife. A definitive identification may require microscopy or chemical testing because the image could also show green quartzite or serpentine.