[Jewelry making - Article 00016] - Re: [Orchid] Amethyst ?

[Gerry]

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    William, I went to the gemologist site and he said exactly what Ron
    Mills had said. Synthetic amethyst is so good that even GIA is having
    a difficult time separating synthetic from natural.  Does anyone have
    an article written by one of the major labs in the last 5 years
    giving up to date synthetic quartz detection techniques?  I would
    like to know.  Please respond to me off list if you are a lurker. 

    My own experience is that in the last 10 years the lab grown
    material emulates the natural so closely that if the stone does not
    have distinctive zoning, twining, and inclusions I can not tell the
    difference.  I have used 10X, immersion, and microscope.  I do not
    know if all synthetic quartz will fluoresce.  Is fluorescence a
    reliable test? My intuition says it is not or everyone would know it
    was a definitive test.  Anyone have any experience with this test? 

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

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