topaz

A colorless, blue, yellow, brown, or pink aluminum silicate mineral, often found in association with granitic rocks and valued as a gemstone, especially in the brown and pink varieties.

Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.

A light yellow variety of quartz.

A mineral of a vitreous luster, transparent or translucent, sometimes colorless, often of a yellow, white, green, or pale-blue color.

In heraldry, the tincture or in blazoning by the precious stones. See blazon, n., 2.

A humming-bird, Topaza pella or T. pyra.

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.

Either one of two species of large, brilliantly colored humming birds of the genus Topaza (Topaza pella or Topaza pyra), of South America and the West Indies.

See the Note under Quartz.