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:
“We are wearied of our huts
And the smoky smell of our garments.
We are sick with desire of the sun
And the grass on the mountains.”
—Unknown. The Grass on the Mountain (l. 11–14)