mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Hardness: 7 Mohs; Color: Pale to forest green; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal); Specific Gravity: 2.63-2.65; Cleavage: None (conchoidal fracture).
- Hardness
- 7 Mohs
- Color
- Pale to forest green
- Luster
- Vitreous
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Physical properties
Hardness: 7 Mohs; Color: Pale to forest green; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal); Specific Gravity: 2.63-2.65; Cleavage: None (conchoidal fracture).
Formation & geological history
Forms in metamorphic rocks like phyllites or schists and in hydrothermal veins. The green color is caused by tiny inclusions of green fuchsite mica.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), carvings, and as a popular stone for collectors and metaphysical use.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass. The natural stone's shimmer is known as aventurescence.
Field identification & locations
Identify by its characteristic green color and shimmering mica inclusions. It is widely found in India, Brazil, and Russia. It mimics jade but is harder and has a 'glittery' internal reflection.
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