mineral
Topaz
Al2SiO4(F,OH)2
AI-generated identification · may be incorrectHardness of 8 on the Mohs scale, typically colorless, yellow, or blue with a vitreous luster and distinct basal cleavage.
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Physical properties
Hardness of 8 on the Mohs scale, typically colorless, yellow, or blue with a vitreous luster and distinct basal cleavage.
Formation & geological history
Formed through the cooling of fluorine-bearing vapors associated with felsic igneous rocks like pegmatites and granites.
Uses & applications
Widely used as a gemstone in jewelry and valued by mineral collectors for its crystal habit.
Geological facts
Imperial topaz features a rich golden-orange color and is among the most prized and valuable varieties of the mineral.
Field identification & locations
Identified easily by its high hardness (scratching quartz) and characteristic prismatic crystal structure with striations.
