
mineral
Green Aventurine
Quartz with fuchsite inclusions (SiO2)
Hardness: 7 on the Mohs scale. Color: Green to blue-green, sometimes silvery or golden sheen. Luster: Vitreous to greasy, with a glittering effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Specific gravity: 2.65.
- Hardness
- 7 on the Mohs scale
- Color
- Green to blue-green, sometimes silvery or golden sheen
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Physical properties
Hardness: 7 on the Mohs scale. Color: Green to blue-green, sometimes silvery or golden sheen. Luster: Vitreous to greasy, with a glittering effect (aventurescence) caused by mineral inclusions. Crystal structure: Trigonal. Specific gravity: 2.65.
Formation & geological history
Forms in metamorphic environments or hydrothermal veins, often as pegmatites or quartz-rich schists where chromium-rich micas (fuchsite) crystallize within the growing quartz matrix.
Uses & applications
Commonly used in tumbled stones, gemstone jewelry, carvings, and as a decorative stone. Highly valued in crystal healing and by mineral collectors.
Geological facts
The shimmering or glittering effect in aventurine is known as 'aventurescence', a term derived from the Italian 'a ventura', meaning 'by chance', referring to the accidental discovery of glass with copper flakes that resembled the mineral.
Field identification & locations
Identified by its characteristic green color combined with a glittering metallic sheen under light and a hardness that easily scratches glass. Found worldwide, with major deposits in India, Brazil, Russia, and the USA.
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