1. 
   rock crystal
   [n] - a clear quartz used in making electronic and optical equipment
   Found op http://www.webdictionary.co.uk/definition.php?query=rock%20crystal
   
   
2. 
   Rock crystal
   Naturally-occurring Quartz. Also a style of engraving where all the engraved parts are polished, giving a more brilliant effect (developed in England during the 1880s & 1890s)
   Found op http://www.great-glass.co.uk/glass%20notes/glossa-e.htm
   
   
3. 
   rock crystal
   transparent quartz noun a clear quartz used in making electronic and optical equipment
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=rock%20crystal
   
   
4. 
   rock crystal
   transparent variety of the silica mineral quartz that is valued for its clarity and total lack of colour or flaws. Vessels and spheres have been ... [1 related articles]
   Found op http://www.britannica.com/eb/a-z/r/58
   
   
5. 
   Rock crystal
   A kind of quartz of transparant and neutral appearance, used before glass was developed to make household articles and ornaments.
   Found op http://www.arca.net/postcard/gourl.html?URL=http://www.arca.net/tourism/glo
   
   
6. 
   rock crystal
   rock crystal: see quartz.
   Found op http://www.infoplease.com/ce6/sci/A0918199.html
   
   
7. 
   Rock Crystal
   [Fabergé egg] The Rock Crystal Egg or Revolving Miniatures Egg is an Imperial Fabergé egg, one in a series of fifty-two jeweled eggs made under the supervision of Peter Carl Fabergé for the Russian Imperial family. It was created in 1896 for Empress Alexandra Fyodorovna. The egg currently...
   Found op http://en.wikipedia.org/wiki/Rock_Crystal_(Fabergé_egg)
   
   
8. 
   Rock Crystal
   [novella] Rock Crystal (1845, German: Bergkristall) is a novella by Austrian writer Adalbert Stifter. It influenced Thomas Mann and others with its "suspenseful, simple, myth-like story and majestic depictions of nature." Mann said Stifter is "one of the most extraordinary, the most enigmati...
   Found op http://en.wikipedia.org/wiki/Rock_Crystal_(novella)
   
   

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