[Jewelry making - Article 00139] - Re: [Orchid] Cloisonne Enameling on Cast Silver

[Jack]

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    Allan, sorry to differ (unless Australian legislation is different)
    but the 7.5% in sterling can be anything - copper is most
    traditional, but not stipulated. So as long as 92.5% of the contents
    of an alloy by weight are silver then it is sterling. 

    Don't quite follow your logic re 24 K gold, but in all these things
    (silver qualities, Karat gold etc) the proportions are by weight not
    volume so yes, in theory, you could mix about 11 buckets of tin
    (light metal - haven't checked the maths, but I'm talking
    theoretically:)) to 1 bucket of 24 K gold and still have an alloy
    that could legally bear a UK 9 K hallmark. 

Jack Ogden


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