Hallmarking guidance notes

Information from the UK's assay offices giving guidance on the Hallmarking Act 1973.


Hallmarking guidance notes


An explanation of why precious metal articles are hallmarked and the standards for hallmarking precious metal. The official symbols, including sponsor’s or maker’s mark and the metal and fineness (purity) marks are also published in this guide.

Published 12 July 2013
Last updated 15 November 2016 + show all updates
  1. Updated guidance on the gold fineness description for gold plated silver articles (page 10).
  2. Guidance updated to include information on hallmarking Mokume Gane articles containing precious metals.
  3. added Providing better information and protection for consumers policy tag
  4. First published.