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See smoky quartz.
[After the Cairngorm Mountains.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Minerals) a smoky yellow, grey, or brown variety of quartz, used as a gemstone. Also called: smoky quartz
2. (Jewellery) a smoky yellow, grey, or brown variety of quartz, used as a gemstone. Also called: smoky quartz
[C18: from Cairn Gorm (literally: blue cairn), mountain in Scotland where it is found]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a smoky yellow to dark brown or black variety of quartz, used as a gem.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||cairngorm - a smoky yellow or brown quartz |
quartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
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