As a mark of quality and to ensure absolute authenticity all relevant pieces are hallmarked as required by the Hallmarking Act of 1773. This is overseen by The Goldsmith's Company of London which is where hallmarking began nearly 700 years ago. My pieces are sent to their Assay Office who independently hold my registered hallmark and it is there that the pieces are tested for precious metal content and the hallmarking takes place. Please see Conditions for pieces exempt to the Hallmarking Act of 1773. The process does add a bit of time to the overall delivery of a piece but the time and effort is worth it .
I am also a member of the Guild of Jewellery Designers which is the nationwide guild for jewellers and silversmiths in the United Kingdom.