Hallmarking Guide

All items (over certain weights) sold in the UK and described as being made from gold, silver, platinum or palladium must have a legally recognised hallmark. The law is set out in the Hallmarking Act 1973 (which has been amended and updated on various occasions).

If a precious metal item weighs less than a certain amount it is not compulsory to apply a hallmark. The minimum weight thresholds are:

  • gold 1 gram
  • silver 7.78 grams
  • platinum 0.5 gram
  • palladium 1 gram