metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Hardness: 6.5-7 (Mohs); Color: Pale to medium green; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (Trigonal); Cleavage: None (Conchoidal fracture); Specific Gravity: 2.64-2.69
- Hardness
- 6
- Color
- Pale to medium green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Pale to medium green; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (Trigonal); Cleavage: None (Conchoidal fracture); Specific Gravity: 2.64-2.69
Formation & geological history
Formed in metamorphic rocks (schists and quartzites) through the recrystallization of quartz grains under high pressure and temperature. The green color is derived from inclusions of chromium-rich mica known as fuchsite.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and widely sold as a healing stone in the metaphysical community.
Geological facts
Aventurine is famous for its 'aventurescence,' a shimmering effect caused by light reflecting off tiny platelets of mica within the stone. Historically, it has been confused with jade.
Field identification & locations
Identify in the field by its speckled green appearance and shimmering internal reflections. It is commonly found in India (the largest producer), Brazil, Russia, and Austria.
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