metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 6.5-7 Mohs scale; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69. Known for 'aventurescence' (a metallic glitter effect).
- Hardness
- 6
- Color
- Pale to deep green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs scale; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69. Known for 'aventurescence' (a metallic glitter effect).
Formation & geological history
Formed in metamorphic rocks like phyllites and schists where quartz is subjected to heat and pressure, allowing chromium-rich mica (fuchsite) to integrate within the crystal structure.
Uses & applications
Used extensively in jewelry for beads, cabochons, and tumbled stones. Also popular in industry for ornamental carvings and as a healing stone in metaphysical practices.
Geological facts
The name 'Aventurine' comes from the Italian word 'a ventura', meaning 'by chance', originally referring to accidental discoveries of similar-looking glass in Venice during the 18th century.
Field identification & locations
Identified by its distinctive grainy texture and shimmering inclusions (aventurescence). Found commonly in India, Brazil, and Russia. Used as a budget-friendly alternative to jade.
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