Hallmarking

It is a legal requirement in the UK that all pieces that use precious metals carry a hallmark if they are over a certain weight. Details can be found on the assay office Dealers' Notice. I have added a link to the PDF lower down the page.

The main points are that

  • A piece using silver must be marked if the silver parts weigh at least 7.78g in total

  • A piece using gold must be marked if the gold parts weigh at least 1g in total

  • The weights apply to any piece that needs tools to take it apart, so a charm bracelet with lots of small charms soldered on would need to be marked if the total weight reaches the threshold. A bracelet with slide on beads that can be removed would not need to be marked, although the empty bracelet might be heavy enough to require a hallmark

  • For a piece that uses a mixture of materials, such as a silver pendant with a gemstone cabochon, it is the weight of metal that counts

  • A pendant and chain count as two pieces if they can be separated without needing tools

  • A pair of earrings counts as two pieces for hallmarking purposes

  • You are allowed to have a piece hallmarked if it is underweight. I often do this as it is a validation of my work

  • A 925 stamp is not a hallmark. It can be added by anybody and unfortunately some people are not very scrupulous

I believe that it is really important to respect this law in order to maintain the quality and integrity of the jewellery trade, and all my precious metal jewellery will be hallmarked according to the regulations. If you have any questions please do not hesitate to ask.

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