mineral

Blue Quartz (Blue Aventurine)

Silicon Dioxide with inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, vitreous to dull luster, hexagonal crystal system, distinct grainy texture due to inclusions, bright denim-to-indigo blue color.

Identified July 24, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, vitreous to dull luster, hexagonal crystal system, distinct grainy texture due to inclusions, bright denim-to-indigo blue color.

Formation & geological history

Forms in metamorphic or magmatic environments where quartz crystallizes along with blue mineral inclusions like dumortierite, magnesioriebeckite, or crocidolite.

Uses & applications

Popularly used as a tumbled decorative stone, in lapidary work, jewelry beads, and metaphysical crystal collecting.

Geological facts

The distinct blue hue in natural blue quartz is typically caused by minute microscopic fibrous inclusions of dumortierite or tourmaline rather than elemental impurities in the quartz structure itself.

Field identification & locations

Can be identified in the field by its scratch resistance (harder than steel), quartz-like toughness, and lack of cleavage. Commonly found in Brazil, India, Russia, and South Africa.