mineral

Green aventurine (probable)

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

AI-generated identification · may be incorrect

Identified August 16, 2026More mineral →

Explore Green aventurine (probable) in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Typically translucent to opaque green with subtle glittery aventurescence; Mohs hardness 6.5–7, vitreous to pearly luster, massive granular texture, no prominent cleavage, and specific gravity about 2.6–2.7. The pictured small, irregular polished chip is consistent with this material, though exact identification requires testing.

Formation & geological history

Forms when quartz-rich rock recrystallizes and incorporates chromium-bearing fuchsite or other green mica, commonly during metamorphism. It is generally Precambrian to younger, depending on locality.

Uses & applications

Used for beads, carvings, cabochons, decorative stone, and tumbled specimens; larger pieces are used as ornamental interior stone. Small chips usually have modest value.

Geological facts

Aventurescence comes from reflective mica or mineral platelets rather than from quartz itself. Green aventurine is commonly confused with jade, but it is usually less tough and more visibly sparkly.

Field identification & locations

Common sources include India, Brazil, Russia, and Tanzania. Identify by its quartz-like hardness, granular texture, and mica sparkle; glass imitations are softer and often show bubbles.