smoky quartz

smoky-quartz的词性：
n.（名词）

1. A transparent or semitransparent brown or gray to nearly black variety of quartz, used as a gemstone.Also called cairngorm
烟晶：一种透明或半透明的褐色或灰色，接近黑色的水晶，用来制作宝石也作 cairngorm