[Jewelry making - Article 00730] - Re: [Orchid] Platinum enhanced sterling?

[Tim Blades]

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Hi Dennis,

    there was a report in New Scientist a few years ago, I will see if I
    can find my offprint, apparently the Egyptians had a method for
    purifying gold by heating it in a clay pot with salt, for a couple of
    days, held at exactly the right temperature. (if my memory serves me
    correctly). They found a piece of broken pot that had traces of gold
    on the inside and the other metals diffused through it. They though
    it had been accidentally dropped, and that this process was done
    commercially, so to speak. 

regards Tim.
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