Mineral (Variety of Quartz)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Hardness: 6.5 - 7 (Mohs scale); Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None; Specific gravity: 2.6 - 2.7.
- Hardness
- 6
- Color
- Pale to deep green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5 - 7 (Mohs scale); Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None; Specific gravity: 2.6 - 2.7.
Formation & geological history
Formed through the metamorphic cooling of silica-rich fluids. Its green color and 'aventurescence' (shimmer) come from inclusions of chromium-rich mica called fuchsite.
Uses & applications
Commonly used for decorative statues, jewelry (cabs/beads), aquarium gravel, and as a popular stone for lapidary work and metaphysical collections.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the accidental discovery of aventurine glass in the 18th century.
Field identification & locations
Identify by its characteristic 'shimmer' when rotated under light and its inability to be scratched by a steel knife. Found in India, Brazil, and Russia. Look for a grainy, sugary texture in raw specimens.
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Silicon Dioxide (SiO2) with various inclusions
Mineral, variety of Quartz
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (Variety of Quartz)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (variety of Quartz)