[Jewelry making - Article 00136] - Re: [Orchid] Setting customer stones

[leonid surpin]

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>     Cutting will not cause a diamond to cleave, but I have seen a
>     customers ring with a diamond that was hit just right, it was
>     still set, but the top had come off at an angle slanting downward
>     across the diameter. 

    The situation you are describing could happen. But if stone would be
    examined before setting the flaw is easily seen and I would reject
    such a stone. Any gemstone must be examined before setting. Also, the
    damage causing diamond to behave that way was introduced during
    cutting. Sometime they fell apart on the lap, sometimes setter is
    left holding the bag. That is why examination is critical. 

>     Great care in setting is not enough when the pressure needed to
>     move the metal is greater than the pressure needed to break that
>     particular diamond. 

    You hit the nail on the head. The key to safe setting is to never
    exceed the safety threshold. We are jewelers, we are not plumbers.
    The work is accomplished through the application of the intellect, 
not
    muscle. 

Leonid Surpin.
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