mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Hardness of 7 on the Mohs scale, blue or grey-blue color, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, blue or grey-blue color, vitreous luster, trigonal crystal system, conchoidal fracture, specific gravity around 2.65.
Formation & geological history
Formed through hydrothermal processes or within igneous and metamorphic rocks, often colored blue by microscopic mineral inclusions such as dumortierite or riebeckite.
Uses & applications
Used in jewelry, decorative carvings, and crystal healing.
Geological facts
Natural blue quartz is relatively rare compared to other varieties of quartz, as most vibrant blue stones on the market are either dyed or irradiated.
Field identification & locations
Identified by its hardness, conchoidal fracture, and characteristic blue coloration; commonly found in Brazil, India, and the United States.
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