Topaz

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 Topaza, of South America and the West Indies.

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

a yellow quartz