Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of topaz is as below...

Danburite :: Danburite (n.) A borosilicate of lime, first found at Danbury, Conn. It is near the topaz in form..

Chrysolite :: Chrysolite (n.) A mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; -- called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz..

Pycnite :: Pycnite (n.) A massive subcolumnar variety of topaz.

Topazolite :: Topazolite (n.) A topaz-yellow variety of garnet.

Topaz :: Topaz (n.) Either one of two species of large, brilliantly colored humming birds of the Topaza, of South America and the West Indies..

Topaz :: Topaz (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 alumina, and is used as a gem..

Gem :: Gem (n.) A precious stone of any kind, as the ruby, emerald, topaz, sapphire, beryl, spinel, etc., especially when cut and polished for ornament; a jewel..

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