Mineral
Rutilated Quartz (or possibly Tourmalinated Quartz, White Rutile)
SiO2 with TiO2 inclusions
AI-generated identification · may be incorrectHardness 7 (Mohs), transparent to translucent base with needle-like inclusions, vitreous luster.
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Physical properties
Hardness 7 (Mohs), transparent to translucent base with needle-like inclusions, vitreous luster.
Formation & geological history
Formed in hydrothermal veins and pegmatites where silica and rutile crystallize together.
Uses & applications
Commonly used in jewelry making, lapidary arts, and sought after by collectors for its unique inclusions.
Geological facts
The needle-like crystals inside the quartz are mostly rutile (titanium dioxide). The white needles are less common than golden or black ones.
Field identification & locations
Identified by the distinct needle-like inclusions within a quartz matrix. Found globally, notable deposits in Brazil and Madagascar.
