
mineral
Green Aventurine
Si O2 (Silicon Dioxide with Fuchsite inclusions)
Hardness: 7 Mohs; Color: Green (due to Fuchsia mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (cryptocrystalline); Specific gravity: 2.64-2.69; Cleavage: None (conchoidal fracture).
- Hardness
- 7 Mohs
- Color
- Green (due to Fuchsia mica)
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs; Color: Green (due to Fuchsia mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (cryptocrystalline); Specific gravity: 2.64-2.69; Cleavage: None (conchoidal fracture).
Formation & geological history
Formed primarily in metamorphic environments where quartz-rich sediments are subjected to heat and pressure, allowing mica inclusions like fuchsia to grow within the quartz matrix. Most deposits are several hundred million years old.
Uses & applications
Widely used for ornamental carvings, tumble stones, beads in jewelry, and as a popular specimen for crystal healing and mineral collectors.
Geological facts
Aventurine is known for 'aventurescence,' a shimmering effect caused by platy mineral inclusions. It was named after 'a ventura' (by chance), originally referring to a type of Italian glass discovered accidentally in the 18th century.
Field identification & locations
Identified by its signature green color and shiny mica inclusions visible under magnification. Commonly found in India, Brazil, and Russia. Collectors should look for even color distribution and a strong shimmering effect.
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