mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2)
Hardness: 6.5-7 on Mohs scale; Color: Green to bluish-green with sparkling flecks; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific gravity: ~2.65.
- Hardness
- 6
- Color
- Green to bluish-green with sparkling flecks
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Green to bluish-green with sparkling flecks; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific gravity: ~2.65.
Formation & geological history
Formed in metamorphic or igneous environments where quartz crystallizes along with tiny mica inclusions (specifically fuchsite, a chromium-rich muscovite mica) that give it its green color and aventurescence.
Uses & applications
Popular for lapidary work, jewelry making, polished cabochons, carvings, and metaphysical/crystal collecting.
Geological facts
The characteristic shimmering effect seen in aventurine is calledaventurescence, caused by light reflecting off tiny platy mineral inclusions within the quartz matrix.
Field identification & locations
Look for a translucent to opaque green microcrystalline quartz body with fine glittery flecks under light. Major commercial sources include India, Brazil, Russia, and Madagascar.
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