Smoky quartz - Definition and Overview

Smoky quartz or Smokey quartz is a brown variety of quartz caused through the natural (or artificial) irradiation of aluminium-containing rock crystal. A very dark brown to black opaque variety is known as morion.

See also: List of minerals

External link

Mineral Galleries - smoky quartz (http://mineral.galleries.com/minerals/gemstone/smoky_qu/smoky_qu.htm)

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