Encyclopedia > Emerald

  Article Content

Emerald

The emerald is a variety of the mineral beryl, colored green by trace amounts of chromium and sometimes iron. It is highly prized as a gemstone and ounce for ounce is the most valuable gemstone in the world, often made more so by inclusions. Beryl has a hardness of 8 on the 10-point Mohs scale of hardness.

See also: List of minerals

Further Reading

  • Emerald & Other Beryls, John Sinkankas, Geoscience Press, 1994, hardcover textbook, ISBN 0801971144


Emerald[?] is also the name of a town in Queensland.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
KANU

... making Kenya officially a one-party state, and parliamentary elections were held in September 1983. The 1988 elections reinforced the one-party system. However, in ...

 
 
 
This page was created in 40.6 ms