Exemptions Not Requiring a Hallmark
Articles weighing less than the following will not carry a hallmark:
- Gold weighing less than 1 gram
- Silver weighing less than 7.78 grams
- Platinum weighing less than 0.5 gram
- Palladium weighing less than 1 gram
The International Convention on Hallmarks
The International Convention on Hallmarks is an international treaty between contracting countries, which aims at facilitating the cross-border trade of precious metal articles.
UK is a signatory to the International Convention. This means that UK Assay Offices can apply the Common Control Mark (additional optional mark) which will then be recognised by all member countries in the Convention.
The member countries of the Convention are: Austria, Cyprus, Czech Republic, Denmark, Finland, Hungary, Ireland, Israel, Latvia, Lithuania, The Netherlands, Norway, Poland, Portugal, Slovak Republic, Slovenia, Sweden, Switzerland and United Kingdom.
For more information about the International Convention Marks, please visit any of the UK Assay Office websites.
The Dudley & Roo Hallmark bears not only authenticity of your jewellery, but it is representative of the pride, hard work and dedication that goes in to creating every single piece. All precious metal articles exceeding the legal required weight limit will have been tested and hallmarked where legally required at Edinburgh Assay Office.
The Hallmark recognisable as a Dudley & Roo piece of jewellery will bear these symbols:
The Sponsors mark, the Fineness mark, the traditional Fineness symbol (lion) and the Assay Office mark (Edinbugh/castle).