
mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2)
Hardness: 7 Mohs scale. Color: Translucent to opaque green with shimmering metallic specks (aventurescence). Luster: Vitreous to waxy. Crystal structure: Hexagonal/Trigonal (microcrystalline). No cleavage. Specific gravity: 2.63 - 2.65.
- Hardness
- 7 Mohs scale
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs scale. Color: Translucent to opaque green with shimmering metallic specks (aventurescence). Luster: Vitreous to waxy. Crystal structure: Hexagonal/Trigonal (microcrystalline). No cleavage. Specific gravity: 2.63 - 2.65.
Formation & geological history
Formed in magmatic and metamorphic rocks where silica crystallizes along with mica inclusions. The green color usually comes from fuchsite (a chrome-rich mica) trapped within the quartz matrix. Most deposits occur in post-Precambrian formations.
Uses & applications
Extensively used for ornamental carvings, jewelry beads, tumbled pocket stones, and architectural accents. In the metaphysical community, it is popular as a stone of prosperity.
Geological facts
The name 'Aventurine' comes from the Italian word 'a ventura', meaning 'by chance', originally referring to the accidental discovery of aventurine glass or 'goldstone' in the 18th century, which looks similar to this natural stone.
Field identification & locations
Identified by its distinctive grainy texture and shimmering mica inclusions. It is most commonly found in India (the largest producer), Brazil, and Russia. Collectors should look for the 'aventurescence' effect when rotated under light.
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