mineral
Yellow Topaz
Topaz - Al2SiO4(F,OH)2
AI-generated identification · may be incorrectHardness of 8 on the Mohs scale. Color ranges from yellow to brownish-orange, with a vitreous luster and an orthorhombic crystal system.
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Physical properties
Hardness of 8 on the Mohs scale. Color ranges from yellow to brownish-orange, with a vitreous luster and an orthorhombic crystal system.
Formation & geological history
Forms in igneous rocks like granite and pegmatites through the action of fluorine-bearing vapors during the late stages of cooling.
Uses & applications
Widely used in fine jewelry as a gemstone and valued by mineral collectors for its crystal clarity.
Geological facts
Natural yellow topaz is often heat-treated to produce more intense blue or reddish hues. It is the birthstone for November.
Field identification & locations
Identified by its distinct conchoidal fracture, high specific gravity, and excellent basal cleavage. Found globally including Brazil, Russia, and the USA.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous