metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 6.5–7 (Mohs scale); Color: Deep green to light green; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (trigonal); Cleavage: None; Specific Gravity: 2.63 - 2.69. It displays a characteristic shimmering effect called aventurescence.
- Hardness
- 6
- Color
- Deep green to light green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5–7 (Mohs scale); Color: Deep green to light green; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (trigonal); Cleavage: None; Specific Gravity: 2.63 - 2.69. It displays a characteristic shimmering effect called aventurescence.
Formation & geological history
Formed through the regional metamorphism of sandstones, where silica recrystallizes and traps tiny flakes of chromium-rich mica (fuchsite) which provides the green coloring and sparkle.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and widely sold as a 'healing stone' or good luck charm in spiritual communities.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to accidental discovery of aventurine glass (goldstone) in the 18th century before the mineral was named.
Field identification & locations
Identify in the field by its grainy quartz texture combined with internal green sparkles (fuchsite flakes). Commonly found in India, Brazil, and Russia. Collectors should look for high-quality translucency and a strong shimmering effect.
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