metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69. It features aventurescence (a shimmering effect).
- Hardness
- 7 Mohs
- Color
- Pale to deep green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69. It features aventurescence (a shimmering effect).
Formation & geological history
Formed as a result of metamorphism of quartz-rich rocks where mica minerals like fuchsite are present, giving it its green color and shimmering inclusions.
Uses & applications
Used primarily in jewelry (cabochons, beads), decorative carvings, aquarium decorations, and as a popular stone for gemstone collecting.
Geological facts
The name comes from the Italian 'a ventura', meaning 'by chance', originally referring to an 18th-century accidental discovery of aventurine glass.
Field identification & locations
Identify in the field by its distinct green color and 'aventurescence' (sparkles from mica flakes). Commonly found in India, Brazil, Russia, and Austria.
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