mineral

Blue Aventurine

Quartz (SiO2) with inclusions

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

Identified August 2, 2026More mineral →

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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.