Smoky Quartz

Smoky Quartz

Smoky or smokey quartz is a brown to black variety of quartz. 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.

Read more about Smoky Quartz:  Uses

Famous quotes containing the word smoky:

    A lustreless protrusive eye
    Stares from the protozoic slime
    At a perspective of Canaletto.
    The smoky candle end of time
    Declines.
    —T.S. (Thomas Stearns)