[Jewelry making - Article 00124] - [Orchid] [Source] Opal cylinder

[Kevin P. Kelly]

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    I have a project in the works. I need two opal round cylinders
    measuring approx 20 x 4-5 mm. 

    Any suggestions as to how one would cut such a form would be welcome.
    I have pretty much the standard lapidary equipment. I've cut and
    polished a variety of stones and shapes, but I've not cut a round
    cylinder. The first question: how do you hold it? 

    The material is Australian crystal opal from Mintabie. It's clear
    with all colors floating in the transparent base. 

Thanks
Kevin
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