[Jewelry making - Article 00077] - Re: [Orchid] Synthetic Amethyst

[Gerry]

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    William, I am most interested in this technique as I am one who has
    never heard of it before.  Please refer me to which issue of Gems &
    Gemology in which I can find this article.  I am also interested in
    information about Ultraviolet Spectrophoptometers and Infrared
    Spectrophotometers. Amethyst identification is a problem when you get
    to the really fine qualities of amethyst.  When you are selling
    amethyst at $30-$75 per carat you really need to be sure that the
    stone is natural and not man made.  I have a market for amethyst in
    the 50-150 carat sizes in extra fine quality. These stones must be
    10X clean, exhibit no color zoning under 10X, or 10X visible twining.
     I have looked at a lot of cut stones and rough and honestly can not
    tell the difference in the finer qualities.  I would like to know how
    GIA tells the difference or how any gemstone laboratory tells the
    difference.  Respond to me off ORCHID if you do not want your
    message posted. 

  Gerry Galarneau
  www.galarneausgems.com
  ggwcr AT cox.net 

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