mineral
Dumortierite Quartz
Dumortierite in Quartz (SiO2 with Al7BO3(SiO4)3O3)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, deep blue to violet-blue color, vitreous to greasy luster, and trigonal crystal system.
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Physical properties
Hardness of 7 on the Mohs scale, deep blue to violet-blue color, vitreous to greasy luster, and trigonal crystal system.
Formation & geological history
Formed via hydrothermal processes and regional metamorphism, replacing aluminum-rich minerals within quartz-rich host rocks.
Uses & applications
Used primarily in lapidary arts, metaphysical jewelry, and ornamental carvings.
Geological facts
Dumortierite inclusions give quartz a distinct denim-blue or indigo coloration that is highly prized by collectors.
Field identification & locations
Identify by its rich blue fibrous patches embedded within clear to milky quartz. Commonly sourced from Brazil, Namibia, and the USA.
