smoky quartz

noun
a smoky-yellow to dark brown or black variety of quartz, used as a gem.
Also called cairngorm, Cairngorm stone.


Origin:
1830–40

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To smoky quartz
Collins
World English Dictionary
smoky quartz
 
n
another name for cairngorm
 
[so named because of its colour]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
Excellent crystals of smoky quartz and feldspar are found in vugs or cavities in the granite.
Another market for the crystals is as feed material to be irradiated to produce smoky quartz.
The only abundant minerals are milky-white perthitic microcline and dark-gray or blue smoky quartz.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature