mineral
Imperial Topaz
Aluminum silicate fluoride hydroxide, Al2SiO4(F,OH)2
AI-generated identification · may be incorrectHardness of 8 on the Mohs scale, yellow to orange-brown color, vitreous luster, orthorhombic crystal system, and perfect basal cleavage.
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Physical properties
Hardness of 8 on the Mohs scale, yellow to orange-brown color, vitreous luster, orthorhombic crystal system, and perfect basal cleavage.
Formation & geological history
Forms in pegmatites and high-temperature hydrothermal veins, often associated with granitic rocks and rhyolites.
Uses & applications
Valuable gemstone used in fine jewelry and collected by mineral enthusiasts.
Geological facts
Natural imperial topaz ranges from golden yellow to deep reddish-orange and is one of the rarest naturally colored topaz varieties.
Field identification & locations
Identified by its high density, distinct cleavage, and exceptional hardness. Commonly sourced from Ouro Preto, Brazil.
