metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Hardness: 7 on Mohs scale; Color: Translucent to opaque green with shimmering platelets; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
- Hardness
- 7 on Mohs scale
- Color
- Translucent to opaque green with shimmering platelets
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 on Mohs scale; Color: Translucent to opaque green with shimmering platelets; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.64-2.69
Formation & geological history
Formed in metamorphic environments where quartz sandstone is subjected to heat and pressure. The green color comes from inclusions of chromium-rich mica called fuchsite.
Uses & applications
Commonly used for tumbled stones, decorative carvings, jewelry (beads, cabochons), and as a popular 'healing' stone in metaphysical communities.
Geological facts
Aventurine displays a unique optical phenomenon called 'aventurescence,' which is a glittering effect caused by light reflecting off tiny mineral flakes within the stone.
Field identification & locations
Identify in the field by its grainy, sugary quartz texture combined with internal green sparkles. It is primarily found in India (near Mysore and Chennai), Brazil, and Russia.
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