metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Hardness: 6.5-7 (Mohs scale), Color: Sage green, Luster: Vitreous to greasy, Crystal structure: Trigonal (microcrystalline), Specific gravity: 2.64-2.69
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Sage green, Luster: Vitreous to greasy, Crystal structure: Trigonal (microcrystalline), Specific gravity: 2.64-2.69
Formation & geological history
Formed as a metamorphic rock (quartzite) composed of quartz microcrystals. Its distinctive green color and aventurescence are caused by inclusions of green chrome-mica known as fuchsite.
Uses & applications
Commonly used in jewelry (beads, cabochons), ornamental carvings, and as a popular stone for collectors and metaphysical practitioners.
Geological facts
Aventurines exhibit a shimmering effect called 'aventurescence' caused by light reflecting off tiny platelets of mica within the stone. Most green aventurine is sourced from India.
Field identification & locations
Identify by its translucent green color and subtle sparkling inclusions. It is most commonly found in India, Brazil, and Russia. It is often confused with jade but is harder and has internal glints.
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