mineral
Blue Quartz
Silicon Dioxide (SiO2) with microscopic inclusion fibers
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, blue to grayish-blue color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, blue to grayish-blue color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
Formation & geological history
Forms in igneous, metamorphic, and hydrothermal environments where trace amounts of dumortierite or riebeckite inclusions scatter light to produce the blue color.
Uses & applications
Widely used in ornamental jewelry, polished tumbling stones, and metaphysical collections.
Geological facts
The blue coloration is typically caused by Rayleigh scattering from microscopic mineral inclusions rather than a chemical substitution in the quartz lattice.
Field identification & locations
Identified by its distinctive blue hue, lack of cleavage, and scratching glass easily; commonly sourced from Brazil, India, and the United States.
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