    Gem cut Zirconium oxide (cubic). 
These beautiful 10mm brilliant cut CZ were purchased from http://www.pehnec.com in April 2002.  Everyone who sees them agrees they are spectacular, especially when you consider the same size diamond would cost 10,000 times more and not look much better, if any. 
Source: Pehnec Gems 
Contributor: Theodore Gray 
Acquired: 17 April, 2002 
Price: $60/50 stones 
Size: 0.39" 
Purity: 74%
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