mineral
Quartz with Tourmaline
Silicon dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with distinct dark prismatic inclusions.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with distinct dark prismatic inclusions.
Formation & geological history
Formed in hydrothermal veins and pegmatites through the cooling and crystallization of silica-rich fluids over millions of years.
Uses & applications
Widely used in lapidary arts, jewelry making, and collected as an ornamental mineral specimen.
Geological facts
Tourmaline needles trapped inside clear quartz are often referred to colloquially as 'Venus hair stone' or 'tourmalinated quartz'.
Field identification & locations
Easily identified by the striking contrast of dark, opaque tourmaline crystals embedded within translucent to transparent quartz host material.
