mineral

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Hardness: 6.5-7 (Mohs), Color: Dark forest green with silvery-green schiller, Luster: Vitreous to waxy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.6-2.7

Hardness: 6

Identified April 9, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Dark forest green with silvery-green schiller, Luster: Vitreous to waxy, Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.6-2.7

Formation & geological history

Formed in metamorphic rocks (schists and quartzites) and certain igneous rocks where mineral inclusions (primarily fuchsite mica) are trapped during quartz crystallization. Most deposits are Proterozoic in age.

Uses & applications

Used extensively in jewelry (beads, cabochons), ornamental carvings, stone masonry, and as a popular collected 'healing stone' or pocket stone.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', referring to the accidental discovery of aventuras glass which has a similar appearance. The shimmering effect is called aventurescence.

Field identification & locations

Identify in the field by its distinct green color and 'aventurescence' (metallic glints). Commonly found in India (Karnatake and Andhra Pradesh), Brazil, and Russia. Unlike green glass, it will scratch common window glass.

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