mineral
Blue Quartz
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale. Color ranges from pale to dark blue, often due to microscopic inclusions of dumortierite, tourmaline, or riebeckite. Luster is vitreous to greasy. Crystal system is trigonal, though commonly found in massive or amorphous forms.
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Physical properties
Hardness of 7 on the Mohs scale. Color ranges from pale to dark blue, often due to microscopic inclusions of dumortierite, tourmaline, or riebeckite. Luster is vitreous to greasy. Crystal system is trigonal, though commonly found in massive or amorphous forms.
Formation & geological history
Forms in igneous, metamorphic, and hydrothermal environments. Often develops in pegmatites and hydrothermal veins where silica-rich fluids cool and crystallize over millions of years.
Uses & applications
Used in crystal healing, decorative items, lapidary arts, and gemstone jewelry.
Geological facts
The blue coloration in many quartz specimens is actually an optical illusion caused by light scattering off tiny microscopic mineral fibers included within the crystal matrix during its formation.
Field identification & locations
Identified by its distinctive blue color, conchoidal fracture, and high hardness (scratches glass easily). Found globally, with notable deposits in Brazil, India, South Africa, and the USA.
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