[Jewelry making - Article 00636] - Re: [Orchid] Diamond cuts technicals

[leonid surpin]

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>     well, in fact, some diamonds do have see-through areas. i'm
>     wearing one. 

    I am assuming that the stone you refer to was properly identified
    and really is a diamond. That leaves us with 2 choices. Either you 
are
    wearing some unusual cut (without a pavilion or pavilion so shallow
    as to render it non-existent), or you are observing your diamond
    inside the mirror vault and mirrors serving as optical links in the
    light path allowing light ray a return path to your eyes. 

    Please understand that humans can only see reflected light. See-
    through means that light ray originated within your visual angle,
    followed the path through the stone, and was able to return back to
    you eyes. Under normal conditions, and normal in this case has very
    wide range, laws of optics make it impossible. 

Leonid Surpin.
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