mineral
Aventurine
Quartz (SiO2) with Fuchsite inclusions
Hardness: 7 on Mohs scale. Color: Pale green to dark green with subtle shimmering effect (aventurescence). Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Specific Gravity: 2.64-2.69.
- Hardness
- 7 on Mohs scale
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 7 on Mohs scale. Color: Pale green to dark green with subtle shimmering effect (aventurescence). Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Specific Gravity: 2.64-2.69.
Formation & geological history
Formed in metamorphic or igneous rock environments where quartz crystallizes along with platy fuchsite mica crystals, which impart its characteristic green color and shimmering quality.
Uses & applications
Used widely for ornamental carvings, beads, tumbled stones, cabochons in jewelry, and popular as a lapidary material and decorative crystal.
Geological facts
The shimmering metallic sheen of aventurine is known as 'aventurescence', which is caused by minute inclusions of green fuchsite mica (a chromium-rich variety of muscovite).
Field identification & locations
Identified by its quartz-like hardness, pale to sea-green color, grainy quartzite texture, and characteristic internal shimmer under light. Common sources include India, Brazil, Russia, and South Africa.
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