mineral

Blue Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on the Mohs scale. Color: Blue, grayish-blue, or lavender-blue. Luster: Vitreous to greasy. Crystal Structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific Gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Blue, grayish-blue, or lavender-blue
Luster: Vitreous to greasy

Identified August 1, 2026More mineral →

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Physical properties

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments. The blue color is typically caused by microscopic inclusions of fibrous minerals like crocidolite or dumortierite, or Rayleigh scattering from tiny inclusions.

Uses & applications

Used widely in lapidary arts, jewelry making, decorative carvings, and as a collector's specimen.

Geological facts

Blue quartz is relatively rare compared to other varieties of quartz like amethyst or citrine. Its soothing blue hue makes it popular in metaphysical practices for communication and calmness.

Field identification & locations

Can be identified by its distinctive blue color, lack of cleavage, conchoidal fracture, and a hardness of 7 which easily scratches glass. Commonly found in Brazil, India, South Africa, and the USA.