All our items are hallmarked by The Goldsmiths’ Company Assay Office where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. Henry III in 1238 began this process in England, and there have been 34 Kings and Queens since then including King Charles III. However there is evidence that a form of marking metal did exist around 400 AD in Byzantine. Precious metals are rarely used in their purest form but are usually alloyed with other metals for workability, durability, wearability. It isn't possible to detect an article's precious metal content by sight or touch. Therefore, it is a legal requirement for an Assay Office to hallmark articles containing precious metals.
The UK Hallmarking Act (1973) states that it is an offence for any person, in the course of trade or business, to describe an un-hallmarked article as being wholly or partly made of precious metal(s) or to supply un-hallmarked articles to which such a description is applied. Please see attached Hallmarking Notice which has to be displayed