Under the Hallmarking Act 1973, every business that sells precious metal jewellery in the UK must display the official Dealer's Notice, which explains what the hallmarks on a piece mean.

What a hallmark tells you

A UK hallmark is an independent guarantee that a piece has been tested by an Assay Office and meets the legal standard of fineness for its metal. Items above the legal weight exemptions must be hallmarked: 1 gram for gold and palladium, 0.5 grams for platinum and 7.78 grams for silver.

A full hallmark includes three compulsory marks:

• Sponsor's mark: the initials of the maker or business that sent the item for hallmarking.
• Fineness mark: the precious metal content in parts per thousand, for example 375 for 9ct gold, 750 for 18ct gold and 950 for platinum.
• Assay Office mark: the office that tested and marked the item. Birmingham's mark is the anchor.

Every piece we sell that is above the exemption weight is hallmarked. If you have any questions about a hallmark, our team will be happy to explain it in store.

[Official Dealer's Notice image from the Birmingham Assay Office to be added here.]