[Jewelry making - Article 00425] - Re: [Orchid] Diamond cuts technicals

[leonid surpin]

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Helen,

>     I looked at the Quadrillion. I like it, like it, like it. It has
>     everything I like in the Princess cut but shares the brilliance of
>     the round brilliant. See following website:
>     http://ambardiamonds.stores.yahoo.net/quad.html 

    in my attempt to understand attraction of the Princess cut I have
    followed the link you provided. I am including 3 sentences from their
    the description of the Princess cut on their website: 

          The black areas are parts of the diamond that do not refract
          light. 

    Those people do not know the difference between reflection and
    refraction. Not a good sign for someone who sells diamonds. 

          In this picture, the diamond has been placed on a black
          background to allow you to easily identify these areas. When
          the diamond is set in a piece of jewelry, these black areas
          will show the color of the metal it is set in. 

    If what they are saying is true, this is not a diamond they are
    selling. A diamond does not have see-though areas. Refractive index
    is to high for that. Dark areas on a diamond are areas of extinction
    and that is quite different from see-through. If their stone, while
    set, shows metal of the ring they are set in, it is not a diamond. 

Leonid Surpin.
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