gemstone
Imperial Topaz
Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2
AI-generated identification · may be incorrectHardness of 8 on the Mohs scale, golden-orange to yellow-pink color, vitreous luster, and orthorhombic crystal system with perfect basal cleavage.
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Physical properties
Hardness of 8 on the Mohs scale, golden-orange to yellow-pink color, vitreous luster, and orthorhombic crystal system with perfect basal cleavage.
Formation & geological history
Formed in high-temperature pneumatolytic processes within acidic igneous rocks like rhyolites and granitic pegmatites.
Uses & applications
Prized globally as a high-end gemstone in fine jewelry and collected by mineral enthusiasts.
Geological facts
Imperial topaz is the natural golden-orange variety, historically associated with the Russian tsars and highly valued for its rich, untreated color.
Field identification & locations
Identified by its high density, extreme hardness, and prismatic crystal habit; mined primarily in Brazil, Pakistan, and Russia.
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