Smokey Quartz
Smokey quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-grey or black crystal. Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon formed from the silicon dioxide by natural irradiation.
Please note: The photos are of the actual item but due to the nature of how colours appear on different screens the colours may be slightly different in reality.