Rock Identifier
Green Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral
mineral

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Hardness: 7 on the Mohs scale. Color: Green to blue-green, sometimes silvery or golden sheen. Luster: Vitreous to greasy, with a glittering effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Specific gravity: 2.65.

Hardness
7 on the Mohs scale
Color
Green to blue-green, sometimes silvery or golden sheen
Identified More mineral
Explore Green Aventurine in the encyclopedia →

Identify your own rocks.

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

Physical properties

Hardness: 7 on the Mohs scale. Color: Green to blue-green, sometimes silvery or golden sheen. Luster: Vitreous to greasy, with a glittering effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Specific gravity: 2.65.

Formation & geological history

Forms in metamorphic environments or hydrothermal veins, often as pegmatites or quartz-rich schists where chromium-rich micas (fuchsite) crystallize within the growing quartz matrix.

Uses & applications

Commonly used in tumbled stones, gemstone jewelry, carvings, and as a decorative stone. Highly valued in crystal healing and by mineral collectors.

Geological facts

The shimmering or glittering effect in aventurine is known as 'aventurescence', a term derived from the Italian 'a ventura', meaning 'by chance', referring to the accidental discovery of glass with copper flakes that resembled the mineral.

Field identification & locations

Identified by its characteristic green color combined with a glittering metallic sheen under light and a hardness that easily scratches glass. Found worldwide, with major deposits in India, Brazil, Russia, and the USA.