Winners - Professional Jeweller Awards 2025, People's Choice - Collection of the Year, Finalists - Emerging Designer UK Jewellery Awards 2026, Finalists - Best Creative Arts Business - Small Business Awards, Finalists - Community Initiative - Professional Jeweller Awards 2026

A Guide to Hallmarking




We feel it's very important to include the UK Hallmarking Guide well to, first of all, to emphasise that silver clay is real silver and can be hallmarked at a UK Assay Office.  But we also like to politely remind you amazing jewellery makers out there that, when you are selling your silver clay creations then you need to make sure that they are hallmarked if they fall within the requirements.

All the information you need is in this easy to read notice but, if you are unsure on anything, don't take the chance.  The Assay Office that you are registered with will advise you and, if you're not registered then contact any office and they will take you through the registration process.  Alternatively, their websites have all the information you need on obtaining your own hallmark.

Center Aligned Form