In the UK it is illegal to sell or describe any item as Gold, Silver, Platinum or Palladium unless it is hallmarked.
A UK hallmark is struck by an independent assay office and guarantees the precious metal content of the item you are buying. Sellers in contravention of the law may be prosecuted and could face fines or imprisonment.
THE HALLMARK COMPRISES THREE COMPULSORY MARKS: A SPONSOR’S MARK, A FINENESS MARK AND AN ASSAY OFFICE MARK.
The registered mark of the company that submitted the article for hallmarking.
Tells you the precious metal content, expressed in parts per thousand.
Assay Office Mark
Tells you which assay office tested and hallmarked the article
YOU MAY SEE OPTIONAL MARKS, SUCH AS THE TRADITIONAL FINENESS SYMBOL AND THE DATE LETTER DEPICTING THE YEAR THE ITEM WAS HALLMARKED.
Traditional Fineness Symbols
International Convention Marks
This mark is used by countries including the United Kingdom, that are signatories to the Internation Convention on Hallmarking and is recognised by all those countries.
Articles above these weights must be hallmarked.
Silver 7.78 grams
Palladium 1.0 grams
Gold 1.0 grams
Platinum 0.5 grams
What should I do if my item is not hallmarked? If you have a concern regarding hallmarking, contact your local Trading Standards Authority.
For more information visit www,gov.uk/government/organisations/british-hallmarking-council