mineral
Topaz
Al2SiO4(F,OH)2
AI-generated identification · may be incorrectHardness of 8 on the Mohs scale, typically yellow to brown in this form, with a vitreous luster and distinct basal cleavage.
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Physical properties
Hardness of 8 on the Mohs scale, typically yellow to brown in this form, with a vitreous luster and distinct basal cleavage.
Formation & geological history
Forms in pegmatites and high-temperature hydrothermal veins, often associated with silicic igneous rocks like granite.
Uses & applications
Used primarily as a gemstone in jewelry and as an industrial abrasive mineral.
Geological facts
Topaz is one of the hardest naturally occurring minerals on Earth and serves as the reference mineral for hardness 8 on the Mohs scale.
Field identification & locations
Can be identified by its characteristic prismatic crystal habit and high hardness; commonly found in major pegmatite districts globally, matching the regional context of central India.
