mineral
Green Aventurine
Quartz variety with fuchsite inclusions (SiO2)
Hardness: 7 on Mohs scale; Color: Green to forest green; Luster: Vitreous to greasy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: ~2.65
- Hardness
- 7 on Mohs scale
- Color
- Green to forest green
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Green to forest green; Luster: Vitreous to greasy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: ~2.65
Formation & geological history
Formed in metamorphic environments and hydrothermal veins where silica-rich fluids deposit microcrystalline quartz along with fuchsite (green chromium-bearing mica) inclusions.
Uses & applications
Popular for lapidary work, cabochons, carved ornaments, beads, and metaphysical/crystal collecting.
Geological facts
The characteristic glint or shimmering effect in aventurine is called aventurescence, caused by microscopic flakes of mica or fuchsite within the quartz matrix.
Field identification & locations
Identified by its quartz-like hardness, grainy microcrystalline texture, and distinct speckled green coloration with faint shimmer. Found abundantly in India, Brazil, Russia, and South Africa.
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