
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 7 Mohs; Color: Pale to dark green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. Known for aventurescence (shimmer).
- Hardness
- 7 Mohs
- Color
- Pale to dark green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs; Color: Pale to dark green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. Known for aventurescence (shimmer).
Formation & geological history
Forms in metamorphic rocks (schists) and igneous pegmatites. The green color and shimmer are caused by tiny platy inclusions of green chromium-rich mica called fuchsite. High-quality deposits are millions of years old.
Uses & applications
Highly popular for tumbled stones, beads, cabochons, decorative carvings, and metaphysical collecting. Also used in ornamental jewelry and landscaping.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to accidental discovery of aventurine glass in the 18th century before the mineral was named.
Field identification & locations
Identified by its distinctive green hue and the inner glittering shimmer when rotated under light. Commonly found in India, Brazil, Russia, and Tanzania. Look for a grainy texture under a magnifying lens.
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