mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Hardness: 7 Mohs; Color: Pale to medium green; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Specific Gravity: 2.64-2.69; Shimmering effect known as aventurescence.
- Hardness
- 7 Mohs
- Color
- Pale to medium green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs; Color: Pale to medium green; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Specific Gravity: 2.64-2.69; Shimmering effect known as aventurescence.
Formation & geological history
Formed in metamorphic rocks and igneous veins when mica inclusions (Fuchsite) align within the quartz structure during crystallization.
Uses & applications
Used primarily for jewelry, tumbled stones, ornamental carvings, clock faces, and as a popular meditation or 'luck' stone in alternative healing.
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. It is known as the 'Stone of Opportunity.'
Field identification & locations
Look for a translucent to opaque quartz with visible internal speckles or a shimmering sheen. It is commonly found in India, Brazil, and Russia. Unlike glass, it will not scratch easily with a steel blade.
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