smoky quartz(redirected from Cairngormstone)
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Related to Cairngormstone: smoky topaz
A transparent or semitransparent brown or gray to nearly black variety of quartz, used as a gemstone. Also called cairngorm.
(Minerals) another name for cairngorm
[so named because of its colour]
a smoky yellow to dark brown or black variety of quartz, used as a gem.