metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
- 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 (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
Formation & geological history
Formed as a metamorphic rock (quartzite) containing platy minerals like micas; the green color and signature 'aventurescence' (shimmer) come from inclusions of chromium-rich fuchsite mica.
Uses & applications
Used extensively in jewelry for beads, cabochons, and carvings; also popular in home decor and as a 'healing crystal' in metaphysical practices.
Geological facts
The name 'aventurine' is derived from the Italian word 'a ventura', meaning 'by chance', originally referring to accidental discovery of aventurine glass in the 18th century.
Field identification & locations
Identified by its green color and subtle internal shimmer when rotated. Found majorly in India, Brazil, and Russia. Collectors should look for a uniform green color and the presence of mica sparkles.
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