[Jewelry making - Article 00976] - Re: [Orchid] Refining 14/20 Gold-Filled scrap

[Peter W . Rowe]

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>     I recently sent in some clean 14/20 gold-filled scrap, mostly
>     partial rings and coil ends from cutting jump rings and messed up
>     wire from wire wrapping. The refiner reported that it only
>     contained 41% of the gold that I expected from math calculation. I
>     expected a result of something less than 100% of the math, but is
>     41% reasonable? 

    First thing would be to check whether your math is based on the
    right numbers. For example, did you take the ratio of gold to base
    metal in the gold filled (marked things like 1/20th as a weight
    ratio, or a percentage of thickness? Did you allow for the fact that
    the portion stated as gold in that ratio is itself karat gold, not a
    measure of it's fine gold content? 

    If your math is based on the correct assumptions, the metal you sent
    all the quality you stated, and the refiner really only found 41
    percent of the metal you had, then that would be more of a refining
    loss than is normal. But I'll bet there's some aspect of your
    calculations that you've missed... 

Cheers
Peter Rowe
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