Natural smoky quartz

Smoky Quartz is a brownish grey variety of Quartz which is one of the most common and popular crystals in nature. Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystals. The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the crystalline quartz. bracelets for men and women for daily use.