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Hallmarking advice

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  • Hallmarking advice

    Hi All, yes I'm looking for more advice , this time on hallmarking.

    Has anyone had any experience in getting their silver clay items hallmarked? The suppliers all say it can be hallmarked as .999 fine silver, but from what little I've gleened from the web it seems an expensive and complicated business.

    I know I'm not under any legal obligation to do it, as I tend to make small charms which weight less than 7.8g so are exempt. However, it would be nice to have them hallmarked to show customers that they are genuine.

    Any thoughts?
    Regards, Carol

  • #2
    I get my items hallmarked. There is an initial outlay, but then I tend to wait until I have maybe 15 or 20 items to send off at once, as it works out cheaper per item.

    If you are selling finished jewellery though, it's not the individual charm, it's the weight of all the silver in the piece that counts towards the 7.8g so that's something to watch for.

    I'm registered at the London Assay office and they're really helpful. The website has lots of info on it.


    PMC Certification Modules in Cheshire -


    • #3
      If it's under 7.78 grams you could just stamp it fine silver .999
      you can get the stamps from here

      Nic x
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      • #4

        Great advice, many thanks to you both.

        Just one further question, when using the .999 stamp, do you use it on the wet clay at the time of modelling or hammer it on once it's been fired and polished? Sorry if that's a silly question
        Regards, Carol