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smoky quartz

noun
  1. a smoky-yellow to dark brown or black variety of quartz, used as a gem.
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Origin of smoky quartz

First recorded in 1830–40
Also called cairngorm, Cairngorm stone.

cairngorm

[kairn-gawrm]
noun
  1. smoky quartz.
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Origin of cairngorm

1785–95; short for Cairngorm stone, i.e., stone from Cairngorm Mountains
Also called Cairngorm stone.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for cairngorm-stone

smoky quartz

noun
  1. another name for cairngorm
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Word Origin for smoky quartz

so named because of its colour

cairngorm

noun
  1. a smoky yellow, grey, or brown variety of quartz, used as a gemstoneAlso called: smoky quartz
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Word Origin for cairngorm

C18: from Cairn Gorm (literally: blue cairn), mountain in Scotland where it is found
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012