mineral

White Topaz

Al2SiO4(F,OH)2

Hardness: 8, Color: Colorless (White), Luster: Vitreous, Crystal System: Orthorhombic, Cleavage: Perfect basal, Specific Gravity: 3.49-3.57

Identified April 26, 2026More mineral →

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Physical properties

Hardness: 8, Color: Colorless (White), Luster: Vitreous, Crystal System: Orthorhombic, Cleavage: Perfect basal, Specific Gravity: 3.49-3.57

Formation & geological history

Formed in igneous environments, typically in fluorine-bearing vapors during the last stages of the crystallization of igneous rocks. It is commonly found in granitic pegmatites and rhyolite lavas.

Uses & applications

Used primarily as a gemstone in jewelry, often as a more affordable alternative to diamonds. It is also used as a gemstone in rings, necklaces, and earrings.

Geological facts

Pure topaz is naturally colorless; the various colors observed in topaz are due to trace element impurities or structural defects in the crystal lattice. White topaz is often treated with irradiation and heat to create Blue Topaz.

Field identification & locations

Identify by its high hardness (it can scratch glass and quartz easily) and its high refractive index compared to glass. It feels heavier than expected for its size due to high specific gravity. Commonly found in Brazil, Pakistan, and Russia.