[Jewelry making - Article 00116] - Re: [Orchid] Unusual Busticated Diamond

[Neilthejeweler]

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    The diamond was set in a reasonably beefy four prong head. I could
    see no way the pavilion could have been smacked. My first thought was
    that the cleavage that ran down from the girdle, a most common
    occurrence, somehow changed direction and cut across the pavilion.
    Perhaps there was some glitchy thing going on at the particular point
    where the cleavage plane (parallel to table) intersected the
    developing chip. Maybe a laser drill hole? Of course though, this
    brings into mind the crystal structure. If there was a cleavage
    parallel to the table there shouldn't be a plane roughly parallel to
    the pavilion angle. Maybe it was a twinned crystal and the stress of
    the chipping just pulled the two crystals apart? It was a very clean
    surface on the 'culet' chip, almost looked polished. 

    As to responsibility of the seller....while he most likely had no
    idea of the unusual potential for damage the seller may be in for a
    hot time with the customer. The customer could argue she paid for, oh
    what's the legal term?...purpose suitability or something, I dunno.
    Whether the seller knew or did not know about some theoretical
    unsuitability, she bought it in good faith. Luckily the stone is
    insured. But I wouldn't want to have such a dispute land in my lap.
    Anyway I thought it was weird enough to pass along for general info.
    Could you imagine being the setter and have that happen? I wonder if 
    there is a way to inspect for a twinned crystal before setting.
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