[Jewelry making - Article 00651] - Re: [Orchid] Setting caused fracture in aquamarine

[Dennis Loss]

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    Hello, this is really hard to say without seeing the stone. Even then
    it is sort of a guess. Is the prong putting crooked or excessive
    pressure on the stone? Is the inner edge of the prongs rubbing up
    against the girdle in an stressing way? You really want the prong to
    hold the contour of the stone without putting any real pressure on
    any edges or points. Prongs should really just frame a stone. This
    is hard to do, really well. with diamonds you can sort of get away
    with excessive pressure but on colored stones you are more apt to put
    uneven pressure. If it were me depending on the answers to the above
    questions, I would perhaps back the prong off a bit from the girdle
    edge. It is always a scary venture once you have caused something to
    go amiss, it is hard to know when to stop fiddling. Is this an
    emerald cut? Aqua's often are, and they are harder to set, at least
    for me. 

good luck,
Dennis
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