Smoky Quartz Classification
Brown, Beige, Pale Tan, Reddish Brown, Gray, Dark Brown Almost Black
Cairngorm If Dark Brown Or Morion If Nearly Opaque Black, Mandiore Dorado Quartz(TM), Champagne Quartz, Latte Quartz, Whiskey Quartz
refractive index, birefringence, optic character and optic figure. Careful observation that reveals Brazil-law twinning separates citrine from scapolite with similar properties.
Smoky quartz is the common variety name for transparent quartz with a predominantly brown color with low color saturation. The brown color is due to irradiation and it can be natural or induced by by man. Misnomers: smoky topaz, burnt topaz, Scotch topaz.