Smoky quartz is a variation of gray and translucent quartz that ranges in clarity from almost complete transparency to almost opaque gray or black crystals. Like other quartz gems, it is a crystalline silicon dioxide. The result of the smoky color of free silicon formed from silicon dioxide by natural irradiation.
Video Smoky quartz
Varietas
Morion
The very dark brown to dark variation is known as the morion. Morion is a synonym of Germany, Denmark, Spain, and Poland for smoky quartz. Its name is derived from a misread of mormorion in Pliny the Elder. It has a density of 5.4.
Cairngorm
Cairngorm is a variety of smoky quartz crystals found in the Cairngorm Mountains of Scotland. It usually has a smoky yellow-brown color, although some specimens are grayish-brown.
It is used in Scottish jewelry and as an ornament on kilt pins and sgian-dubhs handles (anglicised: skean dhu ). The largest known cairngorm crystals are 23.6 kg (52 pounds) specimens stored in Braemar Castle.
Maps Smoky quartz
Usage
Smokeless quartz is common and not historically important, but lately it has become a popular gemstone, especially for jewelry.
Sunglasses, in the form of smoky quartz flat panels, were used in China in the 12th century.
Gallery
See also
- Mineral list
References
- Holden, Edward (1925). "Causes of Color in Smoky Quartz and Amethyst" at American Mineralologist , vol. 9, p. 203-252
External links
- Mineral Gallery - smoky quartz
Source of the article : Wikipedia
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