mineral
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
Hardness: 7 on Mohs scale. Color: Green, ranging from pale to dark green. Luster: Vitreous to greasy, often with a metallic glitter (aventurescence) due to mineral inclusions. Crystal structure: Trigonal. Cleavage: None. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Green, ranging from pale to dark green
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Physical properties
Hardness: 7 on Mohs scale. Color: Green, ranging from pale to dark green. Luster: Vitreous to greasy, often with a metallic glitter (aventurescence) due to mineral inclusions. Crystal structure: Trigonal. Cleavage: None. Specific gravity: 2.65.
Formation & geological history
Forms in metamorphic environments, particularly in quartz veins and pegmatites where chromium-rich mica (fuchsite) is present, leading to its distinct green color.
Uses & applications
Used primarily in jewelry, ornamental carvings, tumbled stones, and for metaphysical and crystal healing practices.
Geological facts
The shimmering effect, known as aventurescence, is caused by tiny flat-faced inclusions of other minerals reflecting light. The name comes from the Italian 'avventura', meaning 'by chance'.
Field identification & locations
Can be identified by its characteristic green color combined with a sparkling metallic sheen when turned in the light. Commonly sourced from India, Brazil, Russia, and the USA.
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