SMOKY QUARTZ CRYSTALS
This is the cluster of smoky quartz crystals with feldspar. Dimensions: 7.1 x 4.1 x 2.8″ (18 x 10.5 x 7cm). Weight – 33.5oz (950 grams). Origin: Russia, Transbaikalia.
Some information about smoky quartz:
Smoky quartz is a grey, 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 colour results from free silicon formed from the silicon dioxide by natural irradiation.
A very dark brown to black opaque variety is known as morion. Morion is the German, Danish, Spanish and Polish synonym for smoky quartz.
Cairngorm is a variety of smoky quartz crystal found in the Cairngorm Mountains of Scotland. It usually has a smoky yellow-brown colour, though some specimens are greyish-brown.
Smoky quartz is common and was not historically important, but in recent times it has become a popular gemstone, especially for jewellery. Sunglasses, in the form of flat panes of smoky quartz, were used in China in the 12th century.