topaz

Precious gemstone, ranging in colour from white through to sherry-brown and blue. Orange-red varieties are the rarest and most highly prized. Pink or 'rose' topaz is the result of heat treatment applied to yellow topaz. Topaz is hard and polishes well, but it is highly susceptible to cleavage or splitting. It is usually cut as ovals or oblongs and …...

topaz

  1. a yellow quartz
  2. a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone
  3. a light brown

Topaz

Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and other faces. ==Color and varieties== Pure topaz is colorless and transparent but is usually tinted by impurities; typical topaz is wine, yel...
Found on http://en.wikipedia.org/wiki/Topaz

Topaz

• (n.) Either one of two species of large, brilliantly colored humming birds of the Topaza, of South America and the West Indies. • (n.) A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumi...
Found on http://thinkexist.com/dictionary/meaning/topaz/

topaz

1. <chemical> A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colourless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem. ... 2. <ornithology> Either one of two species of large, brilliantly coloured humming birds of...
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Topaz

100mm coastal defence gun [YU]
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topaz

common topaz noun a yellow quartz
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topaz

noun a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone
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Topaz

[apple] Topaz is a cultivar of dessert apple. It is resistant to apple scab. ...
Found on http://en.wikipedia.org/wiki/Topaz_(apple)

Topaz

[bookmaker] Topaz plc is the largest bookmaker in Azerbaijan. In 2014, it was listed as one of most recognised brands in the country. ==History== The company was founded on 8 January 2011 after country loosened its 13-year ban on gambling. In 2014, company opened its 500th betting office. ==Operations== The company operates worldwide, emplo...
Found on http://en.wikipedia.org/wiki/Topaz_(bookmaker)

Topaz

[hummingbird] The topazes are two species of hummingbirds in the genus Topaza. They are found in humid forests in the Amazon Basin. Males are by far the largest hummingbirds in their range – the giant hummingbird of the Andes is the only larger species in the family. Males have a total length of about 22 cm (8½ in), although this include...
Found on http://en.wikipedia.org/wiki/Topaz_(hummingbird)

Topaz

To'paz noun [ Middle English topas , French topaze , Latin topazos , or topazion , a kind of precious stone, Greek to`pazos , topa`zion ; possibly akin to Sanskrit tap to glow (cf. Tepid ). According to some, the name is from Topazo...
Found on http://www.encyclo.co.uk/webster/T/70

topaz

A semiprecious gemstone that can be found in the colours blue, brown, yellow and pink. Other colours of topaz can be created through enhancements like heat treatment. Topaz has a hardness of 8 on the Mohs Scales
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topaz

dark yellow
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topaz

Mineral, aluminium fluorosilicate, Al2(F2SiO4). It is usually yellow, but pink if it has been heated, and is used as a gemstone when transparent. It ranks 8 on the Mohs scale of hardness
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topaz

silicate mineral that is valued as a gemstone. It is believed that the topaz of modern mineralogists was unknown to the ancients and that the stone ... [3 related articles]
Found on http://www.britannica.com/eb/a-z/t/62

topaz

topaz (tō'păz) , aluminum silicate mineral with either hydroxyl radicals or fluorine, Al2SiO4(F,OH)2, used as a gem. It is commonly colorless or some shade of pale yellow to wine-yellow; pale blue and pale green also occur, but natural red stones are uncommon. Some natural yellow sto...
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Topaz

Topaz is a cultivated variety of potato.
Found on http://www.probertencyclopaedia.com/browse/QT.HTM

Topaz

Topaz is a gemstone that has been around for several thousand years, is very hard at 8 on the Mohs scale and comes in many colours from clear, to pale blue to yellow and pink, because of these wide variance in colours it is often mistaken for other gems.
Found on https://www.encyclo.co.uk/local/22607

Topaz

Topaz is a mineral aluminium fluosilicate occurring in rhombic prisms, generally yellowish and pellucid, also colourless, and of greenish, bluish, or brownish shades with a glassy lustre, fine varieties of the mineral are valued as gem stones. It sometimes occurs massive and opaque. Topaz is formed by fluorine-bearing vapours given off during the l...
Found on http://www.probertencyclopaedia.com/browse/HT.HTM

topaz

[n] - a yellow quartz 2. [n] - a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone
Found on http://www.webdictionary.co.uk/definition.php?query=topaz
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