[Jewelry making - Article 00846] - Re: [Orchid] Grams, Oz, Troy Oz, PW, Carets & Scales, oh MY!

[Peter W . Rowe]

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>        Well, let's see- the density of silver is  10.5  g/cc, while
>     there are 28.375 grams in an ounce, so how many cc's in an ounce of
>     silver is 28.375/10.5=3D 2.702 cc/oz

    That works for avoirdupois ounces.  But precious metals are weighed
    in troy ounces, which contain 31.1 grams per ounce... 

    Cunfusing stuff.  Sure would be nice if the whole precious metals
    industry just switched to metric, and we bought metals by the gram,
    leaving the whole silly troy ounce system to the history books. 

Peter

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