metamorphic

Green aventurine quartz (likely rough quartzite)

Quartz, SiO₂, with green mica/fuchsite or chlorite inclusions

AI-generated identification · may be incorrect

Translucent pale green-gray, vitreous to slightly waxy luster, massive granular texture, and no obvious cleavage; quartz hardness is Mohs 7, with specific gravity about 2.65. The rounded shape may reflect natural water wear or tumbling/polishing.

Identified September 2, 2026More metamorphic →

Explore Green aventurine quartz (likely rough quartzite) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Most likely quartz-rich metamorphic rock (quartzite) or massive quartz formed when silica-rich fluids recrystallized older rocks; green color comes from mica or chlorite inclusions. Exact geological age and locality cannot be determined from the image.

Uses & applications

Used as ornamental stone, carvings, beads, cabochons, tumbled stones, and decorative aggregate; less commonly used as quartzite building stone.

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, is caused by reflective mineral inclusions; this specimen appears only weakly sparkly and could alternatively be green-stained or inclusion-rich quartz.

Field identification & locations

Look for glassy translucence, hardness sufficient to scratch ordinary glass, and green reflective flakes; it should not fizz in dilute acid. Common sources include India, Brazil, Russia, and China.