
mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2)
Hardness: 7 Mohs scale; Color: Green (from Fuchsite mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. It displays 'aventurescence' (a metallic glitter effect).
- Hardness
- 7 Mohs scale
- Color
- Green (from Fuchsite mica)
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 Mohs scale; Color: Green (from Fuchsite mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. It displays 'aventurescence' (a metallic glitter effect).
Formation & geological history
Formed in metamorphic rocks and hydrothermal veins. The green color is caused by platy inclusions of chromium-rich mica (fuchsite) within the quartz matrix. Most deposits are several hundred million years old.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a popular stone in metaphysical collecting.
Geological facts
Aventurine is known as the 'Stone of Opportunity'. The name translates from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of 'aventurine glass' in the 18th century.
Field identification & locations
Identified by its granular quartzite texture and distinctive green glittery sheen when rotated under light. Major deposits are found in India, Brazil, and Russia. Collect high-quality pieces with strong 'shimmer' or aventurescence.
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