mineral
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Hardness: 7 on Mohs scale. Color: Green, ranging from pale to dark green. Luster: Vitreous to greasy. Crystal structure: Trigonal (microcrystalline quartz aggregate). Cleavage: None. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Green, ranging from pale to dark green
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale. Color: Green, ranging from pale to dark green. Luster: Vitreous to greasy. Crystal structure: Trigonal (microcrystalline quartz aggregate). Cleavage: None. Specific gravity: 2.65.
Formation & geological history
Forms in metamorphic environments, specifically regional metamorphism of quartz-rich sandstone or quartzite where chromium-rich mica (fuchsite) becomes incorporated during recrystallization. Geological age varies widely depending on the deposit location.
Uses & applications
Widely used in ornamental carvings, tumbled stones, jewelry, and crystal healing practices due to its attractive sparkling green appearance.
Geological facts
The characteristic shimmer or glitter effect, known as aventurescence, is caused by tiny reflective flakes of green mica (fuchsite) trapped inside the quartz matrix.
Field identification & locations
Can be identified by its distinct green color, vitreous luster, and characteristic glittering metallic flecks under light. Found in Brazil, India, Russia, and the United States.
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