mineral
Dumortierite Quartz
Dumortierite-bearing Quartz (SiO2 with Al7BO3(SiO4)3O3)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vibrant blue to violet-blue color, vitreous luster, hexagonal crystal system, and no distinct cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, vibrant blue to violet-blue color, vitreous luster, hexagonal crystal system, and no distinct cleavage.
Formation & geological history
Formed through hydrothermal or metasomatic processes within aluminum-rich metamorphic and pegmatitic rocks.
Uses & applications
Used primarily in lapidary work, ornamental carvings, and high-end jewelry.
Geological facts
The distinctive blue color is caused by the inclusion of dumortierite needles trapped inside the quartz matrix during crystallization.
Field identification & locations
Identified by its striking denim-blue color contrasting with white quartz, commonly sourced from Madagascar, Namibia, and the USA.
