[Jewelry making - Article 00149] - Re: [Orchid] Bezel setting faceted stones

[The Doctor]

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>         I have just begun gemology classes, just read two chapters
>     mentioning windowing. 

    When you get to the chapter that mentions the "see-through effect"
    you'll get an idea of what has been suggested here. You can read
    print through some stones more easily than others, no matter how
    well its angles have been cut. 

>     Does the oval shape play any part in this? I just glanced through
>     a variety of stones. I can see just slightly through most of them,
>     the lighter colored ones. Peridots, Iolites, Amethysts. Oval and
>     pear shape seem more so than the rounds. Now when I look at my
>     grandmothers round diamond, I can't see a damn thing through that. 

    Shape certainly does play a part. "See-through" is somewhat more
    pronounced on ovals than rounds, and even more so on rectangular
    step cuts. Using the "see-through" effect is normally most effective
    with round stones, but an experienced person who has done it for
    some time can use it to great benefit with any gem material that has
    been made into any cut. It is most often used to help separate
    diamonds from its simulants and imitations (in round cuts - other
    cuts are less reliable). But like I said before, you can try it with
    every gemstone you ever handle to see how it they respond, and add
    it to your gemological acumen. 

James in SoFl

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