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
Other articles related to "smoky quartz, quartz":
Smoky Quartz - Uses
... Sunglasses, in the form of flat panes of smoky quartz, were used in China in the 12th century ...
... Sunglasses, in the form of flat panes of smoky quartz, were used in China in the 12th century ...
Barringer Hill - Geology and History
... A central quartz mass was described more than 40 ft (12 m) across, with distinct white bands, from one-eighth to one-half inch wide ... Between these bands the quartz is glassy and clear ... At one place a vug was found large enough for a man to enter, lined with smoky quartz crystals reaching 1000 lb (500 kg) or more in weight ...
... A central quartz mass was described more than 40 ft (12 m) across, with distinct white bands, from one-eighth to one-half inch wide ... Between these bands the quartz is glassy and clear ... At one place a vug was found large enough for a man to enter, lined with smoky quartz crystals reaching 1000 lb (500 kg) or more in weight ...
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)
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