In the UK any jewellery described as 925 sterling silver must be hallmarked if it weighs over 7.78 grams and cannot be dismantled in to smaller pieces without the use of tools. If the piece comprises of any solid gold, described as such, and the whole piece weighs over 1 gram (even if it is mostly silver) it must be hallmarked by law.

My official makers mark used for hallmarking my designs is: