metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Hardness: 6.5-7 (Mohs scale), Color: Mottled green, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (trigonal), Cleavage: None (conchoidal fracture), Specific Gravity: 2.64-2.69
- Hardness
- 6
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Mottled green, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (trigonal), Cleavage: None (conchoidal fracture), Specific Gravity: 2.64-2.69
Formation & geological history
Formed through the regional metamorphism of sandstone into quartzite, where mineral inclusions like fuchsite mica are trapped within the quartz matrix, giving it a green color.
Uses & applications
Commonly used for decorative carvings (like the mushroom shown), tumbled stones, cabochons for jewelry, and as a popular stone for crystal healing and metaphysical collections.
Geological facts
The name comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass in the 18th century before the natural stone was widely known.
Field identification & locations
Identify by its 'aventurescence', a shimmering or glistering effect caused by platy mineral inclusions. It is most commonly sourced from India, Brazil, and Russia.
More like this
