Black Smoky Quartz Crystal

This impressive crystal has a nicely terminated point and is almost entirely black in color.

Approx. size: 2.5" x 1.75" x 1.5"

Smoky quartz is a gray, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystal. Like other quartz gems, it is a silicon dioxide crystal. The smoky color results from free silicon formed from the silicon dioxide by natural irradiation. Wikipedia

Crystal system: Hexagonal crystal system
Mineral class: Quartz