
mineral
Green Aventurine
Quartz with fuchsite inclusions (SiO2)
Hardness: 7 on the Mohs scale. Color: Green (ranging from pale to dark green). Luster: Vitreous to greasy, with a characteristic shimmering or glistening effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Cleavage: None. Specific gravity: 2.65.
- Hardness
- 7 on the Mohs scale
- Color
- Green (ranging from pale to dark green)
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Physical properties
Hardness: 7 on the Mohs scale. Color: Green (ranging from pale to dark green). Luster: Vitreous to greasy, with a characteristic shimmering or glistening effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Cleavage: None. Specific gravity: 2.65.
Formation & geological history
Forms primarily in metamorphic environments, particularly in quartz veins and pegmatites, where quartz crystallizes alongside chromium-rich micas like fuchsite, imparting the green color.
Uses & applications
Widely used in jewelry, decorative carvings, tumbling, and crystal healing practices.
Geological facts
The shimmering effect unique to aventurine is known as 'aventurescence' and gave the stone its name, derived from the Italian 'a avventura' meaning 'by chance'.
Field identification & locations
Can be identified in the field by its distinct green color combined with a glistening metallic sparkle when rotated in the light. Commonly found in India, Brazil, Russia, and the United States.
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