mineral
Aventurine
Quartz (SiO2) with fuchsite inclusions
Hardness: 7 on Mohs scale. Color: Pale to dark green, sometimes blue, peach, or yellow. Luster: Vitreous to greasy. Crystal system: Trigonal. Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Pale to dark green, sometimes blue, peach, or yellow
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale. Color: Pale to dark green, sometimes blue, peach, or yellow. Luster: Vitreous to greasy. Crystal system: Trigonal. Specific gravity: 2.65.
Formation & geological history
Formed through the regional metamorphism of quartz-rich rocks or via hydrothermal processes where chromium-rich mica (fuchsite) gets trapped within growing quartz crystals.
Uses & applications
Commonly used for ornamental carvings, polished stones, tumbling, tumbled stones, wire wrapping, and low-end jewelry.
Geological facts
The shimmering or glittering effect in aventurine is known as 'aventurescence,' which is caused by the reflective metallic inclusions of mica or hematite.
Field identification & locations
Can be identified by its characteristic pale green color combined with a glittering or sparkly appearance under light due to mineral flakes. Found worldwide, with notable deposits in India, Brazil, Russia, and the USA.
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