[Jewelry making - Article 00283] - Re: [Orchid] The Beilby Layer

[Kevin P. Kelly]

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Greetings

>     The Beilby flow explanation for polishing was discredited long
>     ago, and no one accepts it today. it implied that with the use of
>     certain oxides, some mineral material get hot enough locally to
>     allow the layer to flow, thus creating a polish. Doesn't happen,
>     can't happen. 

    I'm not a scientist, but I remember while polishing an opal with
    cerium oxide I watched the surface of the stone 'flow' to a perfect
    polish. 

    I don't know if that was 'the beilby effect' or what. 

KPK
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