
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Hardness: 7 on Mohs scale; Color: Pale to medium green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69
- Hardness
- 7 on Mohs scale
- Color
- Pale to medium green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 on Mohs scale; Color: Pale to medium green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69
Formation & geological history
Formed in high-pressure metamorphic environments through the recrystallization of quartz containing micas or other minerals, often in plutonic or volcanic rocks.
Uses & applications
Primarily used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and 'healing crystal' collections.
Geological facts
The characteristic 'aventurescence' effect is caused by tiny inclusions of green fuchsite mica. The name comes from the Italian 'a ventura,' meaning 'by chance.'
Field identification & locations
Identify by its characteristic shimmer (aventurescence) and grainy texture compared to jade. Commonly found in India, Brazil, and Russia.
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