Smoky quartz — Smoky or smokey quartz is a brown to black variety of quartz.[1] Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon, formed from the silicon dioxide by natural irradiation … Wikipedia
smoky quartz — n. CAIRNGORM … English World dictionary
smoky quartz — a smoky yellow to dark brown or black variety of quartz, used as a gem. Also called cairngorm, Cairngorm stone. [1830 40] * * * Common, coarse grained variety of quartz that ranges in colour from nearly black through smoky brown. No distinct… … Universalium
smoky quartz — smok′y quartz′ n. mir jew a smoky yellow to dark brown or black variety of quartz, used as a gem • Etymology: 1830–40 … From formal English to slang
smoky quartz — noun a smoky yellow or brown quartz • Syn: ↑cairngorm • Hypernyms: ↑quartz … Useful english dictionary
smoky quartz — noun A brown to black variety of quartz … Wiktionary
smoky quartz — noun a semi precious variety of quartz ranging in colour from light greyish brown to nearly black … English new terms dictionary
smoky quartz — noun Date: 1837 cairngorm … New Collegiate Dictionary
Smoky — Smok y, a. [Compar. {Smokier}; superl. {Smokiest}.] 1. Emitting smoke, esp. in large quantities or in an offensive manner; fumid; as, smoky fires. [1913 Webster] 2. Having the appearance or nature of smoke; as, a smoky fog. Unlustrous as the… … The Collaborative International Dictionary of English
Quartz — Quartz, n. [G. quarz.] (Min.) A form of silica, or silicon dioxide ({SiO2}), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in… … The Collaborative International Dictionary of English
