- a mineral, a fluosilicate of aluminum, usually occurring in prismatic orthorhombic crystals of various colors, and used as a gem.
- citrine(def 2).
- either of two South American hummingbirds, Topaza pella or T. pyra, having chiefly red and crimson plumage and a yellowish-green throat with a topaz sheen.
Origin of topaz
Examples from the Web for topaz
A cluster of streets preserves the memory of the time in their names: Topaz Street, Diamond Street, Emerald Square.Anne Frank’s Amsterdam
October 12, 2013
And at the eleventh hour, Peggy Olson (Elisabeth Moss) saves the company by landing an account with Topaz Pantyhose.‘Mad Men’ New York Premiere: Jon Hamm, January Jones, Creator Matthew Weiner & More
March 20, 2012
The eyes were clear in colour as a dark topaz, and full of topaz light.A Soldier of the Legion
C. N. Williamson
The topaz humming-bird is perhaps the most resplendent and beautiful of its tribe.The Western World
They were not exactly hazel either,—they reminded one of a topaz.Fairy Fingers
Anna Cora Mowatt Ritchie
And there in a row were our three pale-haired storm-waifs with the topaz eyes.The Mutiny of the Elsinore
I tried to make Topaz, but she did not like the water, and scratched me.Little Men
Louisa May Alcott
- a white or colourless mineral often tinted by impurities, found in cavities in igneous rocks and in quartz veins. It is used as a gemstone. Composition: hydrated aluminium silicate. Formula: Al 2 SiO 4 (F,OH) 2 . Crystal structure: orthorhombic
- oriental topaz a yellowish-brown variety of sapphire
- false topaz another name for citrine
- a yellowish-brown colour, as in some varieties of topaz
- (as adjective)topaz eyes
- either of two South American hummingbirds, Topaza pyra and T. pella
Word Origin and History for topaz
colored crystalline gem, late 13c., from Old French topace (11c.), from Latin topazus, from Greek topazos, topazion, of obscure origin. Pliny says it was named for a remote island in the Red or Arabian Sea, where it was mined, but this might be folk etymology from Greek topazein "to divine, to try to locate;" linguists conjecture a connection with Sanskrit tapas "heat, fire." In the Middle Ages used for almost any yellow stone. To the Greeks and Romans, possibly yellow olivine or yellow sapphire. In modern science, fluo-silicate of aluminum.
- A colorless, blue, yellow, brown, or pink orthorhombic mineral valued as a gem. Topaz occurs as transparent or translucent prisms in silica-rich igneous rocks, such as pegmatite, and in tin-bearing rock veins. Chemical formula: Al2SiO4(F,OH)2.
- Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.