mineral
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2)
Hardness: 7 (Mohs scale), Color: Clear/transparent with golden or reddish-brown needle-like inclusions, Luster: Vitreous, Crystal structure: Trigonal (Quartz), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Clear/transparent with golden or reddish-brown needle-like inclusions, Luster: Vitreous, Crystal structure: Trigonal (Quartz), Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or pegmatites where titanium oxide (rutile) crystallizes within the cooling silica (quartz) solution. Found in metamorphic and igneous environments.
Uses & applications
Primarily used in jewelry (rings, pendants), carvings, and as a popular specimen for mineral collectors and crystal healers.
Geological facts
Often called 'Venus hair stone' or 'Cupid's darts' due to the needle-like inclusions. The rutile needles are made of titanium dioxide and can vary in color from gold to deep red.
Field identification & locations
Identify by looking for characteristic needle-like inclusions inside a clear or smoky quartz matrix. Common locations include Brazil, Madagascar, and the United States (North Carolina).
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