[kairn-gawrm] 
| smoky quartz. |
| a smoky-yellow to dark brown or black variety of quartz, used as a gem. |
| cairn·gorm (kârn'gôrm') n. See smoky quartz. [After the Cairngorm (Mountains).] |
| smoky quartz n. A transparent or semitransparent brown or gray to nearly black variety of quartz, used as a gemstone. Also called cairngorm. |