Hallmarking requirements after Brexit

How Brexit will affect UK jewellery importers and exporters.

After Brexit there will be changes that affect UK jewellery importers and exporters.

This guidance is about hallmarks only. Separate guidance should be sought on customs arrangements.

Recognition of hallmarks

If there’s a no-deal Brexit, the UK’s obligations to recognise EU hallmarks would end and EU members’ obligations to recognise UK hallmarks would also end.

Any product already on the market before Brexit would be legal. Any new stock entering the UK market would require a hallmark recognised in the UK. Any new stock exported to EU members would require a mark recognised by those countries.

Common Control Mark

The Common Control Mark (CCM) applied by signatories to the Vienna Convention on the Control of Precious Metal Articles will continue to be recognised in the UK and by Convention members Austria, Croatia, Cyprus, Czech Republic, Denmark, Finland, Hungary, Republic of Ireland, Israel, Latvia, Lithuania, Netherlands, Norway, Poland, Portugal, Slovak Republic, Slovenia, Sweden and Switzerland. Serbia and Italy are in the process of ratifying the treaty.

You can apply a CCM mark to your goods now with no impact on your current import or export requirements. The CCM mark can be applied to new articles along with UK Assay Office marks or as an addition to articles already bearing UK hallmarks.

If you are importing from a convention member after Brexit, you can request a convention mark on your goods or you can submit them to a UK Assay Office for hallmarking.

Exemption weights

The UK exemption weights of 7.78 grams for silver, 1 gram for gold/palladium and 0.5 grams for platinum may not apply in other countries. For example, in the Republic of Ireland there are no exemption weights so any stock destined for the Republic of Ireland must bear a CCM. Exemption weights for the other signatory states are available from your UK Assay Office.

Other EU members

Luxembourg and Germany do not require any hallmark as a pre-market authorisation.

In France a hallmark is a legal requirement. Importers must register with the bureaux de garantie.

In Spain a hallmark is a legal requirement. Importers must register with an assay office in Spain. Ministry of Industry, Trade and Tourism.

There are legal requirements regarding hallmarking in Belgium. See the Federal Ministry of Finance’s factsheet (PDF).

Published 25 October 2019
Last updated 1 November 2019 + show all updates
  1. Added information about Belgium's legal requirements.
  2. First published.