mineral
Green Aventurine
SiO2 (Silicon Dioxide) with Fuchsite inclusions
Hardness: 7 Mohs; Color: Pale to medium green; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal (Hexagonal); Cleavage: None; Specific Gravity: 2.64-2.69
- Hardness
- 7 Mohs
- Color
- Pale to medium green
- Luster
- Vitreous to waxy with aventurescence
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Physical properties
Hardness: 7 Mohs; Color: Pale to medium green; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal (Hexagonal); Cleavage: None; Specific Gravity: 2.64-2.69
Formation & geological history
Formed primarily as a result of the hydrothermal crystallization of silica in quartz veins or as metamorphic quartzite. Its green color comes from inclusions of chrome-rich mica known as fuchsite.
Uses & applications
Commonly used for lapidary work, decorative carvings, jewelry beads, tumbled stones, and as a popular crystal for metaphysical collectors.
Geological facts
Aventurine is known for 'aventurescence,' a shimmering effect caused by platy mineral inclusions that reflect light. It was named after 'a ventura' (by chance), originally a type of Italian glass.
Field identification & locations
Identified by its distinctive shimmering green surface and hardness. Commonly found in India, Brazil, Russia, and Austria. It is often mistaken for green jade or fluorite but is much harder.
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