Our silver jewellery weighing 7.78g or more is hallmarked at the London Assay Office, as an independent test and guarantee of the purity of the precious metal. The Assay Office is part of the Worshipful Company of Goldsmiths, which has been responsible for testing the quality of gold and silver since 1327.
Our hallmark is made up of a series of marks, applied by the London Assay Office after purity testing of each piece:
- our unique maker’s mark: ‘SJW’
- the metal and fineness (purity) symbol and mark
- the Assay Office London mark
- the date mark (a letter indicating the year in which the piece was made)
Precious metal items weighing under 7.78g aren’t generally supplied hallmarked, because this isn’t required by UK law (hallmarking every piece would mean higher prices for you). Individual components may carry a ‘925’ mark.
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