metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 2.64-2.69
- Hardness
- 7 Mohs
- Color
- Pale to deep green
- Luster
- Vitreous to waxy with aventurescence
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Physical properties
Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 2.64-2.69
Formation & geological history
Formed as a result of the metamorphism of quartz-rich sedimentary rocks (quartzite) containing inclusions of green mica (fuchsite), which gives it the characteristic color and shimmer.
Uses & applications
Used primarily for lapidary work such as cabochons, beads, figurines, and tumbled stones for jewelry and metaphysical collections.
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. It is known for its 'aventurescence', a shimmering effect caused by light reflecting off tiny platy inclusions.
Field identification & locations
Identify by its translucent green color and internal sparkling mica flakes. Commonly found in India, Brazil, and Russia. Collectors should look for even color distribution and strong aventurescence.
