[Jewelry making - Article 00614] - Re: [Orchid] Copper to silver weight conversion factor

[leonid surpin]

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    yes by using specific gravity of the metals. 

    specific gravity of copper is 8.96 and of silver is 10.5. 

    It is somewhat inaccurate because we work with sterling silver so
    specific gravity of sterling is slightly less, but for all practical
    purposes it is good enough. 

    The formula you can use is (weight in copper * specific gravity of
    silver) / specific gravity of copper. 

    For example: copper item 100 grams, then (100 * 10.5 ) / 8.96 =
    117.19 grams 

Leonid Surpin
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