[Jewelry making - Article 00325] - Re: [Orchid] [Source] Black Diamond Beads

[Dave Arens]

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Hi Jonathan,

    Several years ago, I got a string of faceted black diamonds at the
    Tucson show from A-One Gems in NYC (aonegems.com). 

    The string was about 3 mm in diameter with a.25 mm hole. The big
    problem is. that if I had to guess I'd say the holes were drilled
    with a laser. As such the hole is not straight though the stone but
    come in at an angle from each side. The result is a knife edge in
    the center of the stone. If the stone is to be used in a piece that
    will subject the material the stones is strung/mounted on to any kind
    of movement, The point is the center of the stone could cause
    premature failure of the mounting/stringing component. 

Usual disclaimers,
Dave
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