mineral
Blue Aventurine
Quartz (SiO2) with inclusions
AI-generated identification · may be incorrectHardness: 7 on the Mohs scale, Color: Light to dark blue, Luster: Vitreous to greasy with a shimmering effect (aventurescence), Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
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Physical properties
Hardness: 7 on the Mohs scale, Color: Light to dark blue, Luster: Vitreous to greasy with a shimmering effect (aventurescence), Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65
Formation & geological history
Formed in metamorphic or igneous environments where quartz-rich solutions precipitate and incorporate microscopic mineral inclusions like dumortierite or crocidolite.
Uses & applications
Used primarily in jewelry, cabochons, carved decorative items, and by mineral collectors.
Geological facts
The blue color and shimmering effect, known as aventurescence, are typically caused by tiny inclusions of dumortierite or blue amphibole fibers trapped within the quartz matrix.
Field identification & locations
Identified by its characteristic blue hue, vitreous luster, and distinct metallic or glittery sheen under light. Commonly sourced from India, Brazil, and Russia.
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