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Re: [Orchid] Flashy tea  
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From: Barbara Smigel
Date: Thu Sep 04 00:13:32 2003
 
     
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    According to the definitions I learned through GIA, CZ is a simulant
    and it is not a synthetic -- a simulant being any stone, natural or
    man-made which is used to imitate another stone.  As CZ is used to
    imitate diamond it is a simulant, but so is white zircon or any other
    white natural stone when it is used in lieu of diamond.  A synthetic,
    on the other hand is a man-made version of a particular NATURAL stone
    -- man-made white sapphire, then is both a simulant and a synthetic. 
    CZ would only a synthetic if cubic zirconia occurs in nature, which
    it does not.  Moissanite, is both a synthetic and a simulant, as it
    is reported that, silicon carbide occurs in nature, though rarely and
    not in cuttable form. 

 
Barbara W. Smigel, PhD.


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