Hallmarking is an important part of the jewllery business within the UK.

Below you can find a simple list of the Hallmark numbers found on jewellery for the UK.

British Hallmarking Numbers :

9 Carat Gold = 375

18 Carat Gold = 750

22 Carat = 916

Platinum = 950


They are out of 1000

1000 being pure gold

You can find more reading here

The British Hallmarking Council was set up under the Hallmarking Act 1973, and came into existence on 1 January 1974. The act requires that it is made up of between 16 and 19 members, 10 of whom are appointed by the Secretary of State for Business, Energy and Industrial Strategy.

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