metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Hardness: 6.5-7 (Mohs scale), Color: Pale to deep green, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None, Specific Gravity: 2.64-2.69
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Pale to deep green, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None, Specific Gravity: 2.64-2.69
Formation & geological history
Forms as a variety of translucent quartz or quartzite containing platy mineral inclusions. It is primarily formed within metamorphic rocks through the crystallization of silica-rich fluids in environments subjected to heat and pressure.
Uses & applications
Widely used in jewelry (beads, cabochons), ornamental carvings, figurines, and as a popular stone in the metaphysical/gemstone collecting market.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass. The shimmering effect seen in the stone is called 'aventurescence'.
Field identification & locations
Identify by its characteristic green color and shimmering inclusions (aventurescence) when turned under light. Found commonly in Brazil, India, Austria, and Russia. It lacks the clear crystalline structure of macro-quartz.
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