Found 2 items, similar to false topaz.
English → English (WordNet) Definition: false topaz false topaz n : a yellow quartz [syn: topaz, common topaz]
English → English (gcide) Definition: False topaz Topaz \To"paz\, n. [OE. topas, F. topaze, L. topazos, or topazion, a kind of precious stone, Gr. to`pazos, topa`zion; possibly akin to Skr. tap to glow (cf. Tepid). According to some, the name is from Topazos, a small island in the Red Sea, where the Romans obtained a stone which they called by this name, but which is the chrysolite of the moderns.] 1. (Min.) 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. [1913 Webster] 2. (Zo["o]l.) 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. [1913 Webster] Note: The two tail feathers next to the central ones are much longer that the rest, curved, and crossed. The Throat is metallic yellowish-green, with a tint like topaz in the center, the belly is bright crimson, the back bright red. Called also topaz hummer. [1913 Webster] False topaz. (Min.) See the Note under Quartz. [1913 Webster]