mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Hardness: 6.5-7 (Mohs); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
- Hardness
- 6
- Color
- Pale to dark green with a shimmering effect
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
Formation & geological history
Formed in metamorphic rocks (phyllites and schists) and occasionally in igneous environments. The green color and 'aventurescence' (shimmer) are caused by platy inclusions of green chromium-rich mica called fuchsite.
Uses & applications
Commonly used for lapidary purposes, including cabochons, beads, small sculptures, and architectural veneers. It is also a very popular specimen for crystal healing and metaphysical collecting.
Geological facts
The name 'Aventurine' is derived from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass (Goldstone) in the 18th century, which this natural stone resembles.
Field identification & locations
Identify by its characteristic green color and the subtle sparkling effect caused by mica flakes. It is frequently found in India, Brazil, Russia, and Tanzania. It can be distinguished from Jade by its lower toughness and the presence of mica sparkles.
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Mineral
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