Topaz

Topaz is a silicate mineral. Along with silicate, it includes the chemical elements aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2.

Color and varieties
Pure topaz is colorless and transparent but they usually have colors made by small impurities. The typical topaz is wine, yellow, pale gray, reddish-orange, or blue brown. It can also be made white, pale green, blue, gold, or pink (rare).

Orange topaz, also known as precious topaz, is the traditional November birthstone, the symbol of friendship, and the state gemstone for the US state of Utah.Utah State Gem – Topaz . Pioneer.utah.gov (2010-06-16). Retrieved on 2011-10-29.

Imperial topaz is yellow, pink (rare, if natural) or pink-orange. Some imperial topaz stones can fade if they are exposed too much in the sunlight.Imperial Topaz , Natural History Museum of Los Angeles CountyGemstones & Gemology – Topaz , Emporia State University

Blue topaz is the US state Texas' gemstone.State Gem – Texas Blue Topaz. State Gemstone Cut – Lone Star Cut. state.tx.us

Mystic topaz is colorless topaz which has been artificially coated, making it rainbow-colored.Mystic Topaz, Consumer Information. Farlang.com (2008-10-30). Retrieved on 2011-10-29.

Gallery

Related pages
List of birthstones

References

Other websites

Pink Topaz, Biblical Topaz References  Farlang – gem information and full text historical references
Topaz and other minerals found at Topaz Mountain, Juab County , Utah Geological Survey
Learn More About Yellow Topaz

Category:Gemstones
Category:Birthstones
Category:Nesosilicates
Category:Aluminium minerals