Welcome to the Goldsmiths' Company Assay Office


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Every Mark Matters

The Goldsmiths’ Company Assay Office is where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. At the Goldsmiths' Company Assay Office we provide both traditional handmarking and the latest laser marking techniques across three key London locations with a choice of three priority services including one hour, same day and early hall. We process 3 million articles a year, in 100,000 packets, and are proud to apply the leopard's head townmark of London to each and every one. 

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Disclaimer: Price does not include VAT. The Goldsmiths’ Company Assay Office makes every effort to ensure the accuracy of calculations, but will not be held responsible for any subsequent loss or inconvenience. Prices given are indicative only and will depend on registration type, options chosen during packet submission etc.

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Disclaimer: Price does not include VAT. The Goldsmiths’ Company Assay Office makes every effort to ensure the accuracy of calculations, but will not be held responsible for any subsequent loss or inconvenience. Prices given are indicative only and will depend on registration type, options chosen during packet submission etc.

News & Events

Vacancy - Part-time Assay Office Assistants, London

Vacancy - Part-time Assay Office Assistants, London 

The Goldsmiths’ Company Assay Office is a commercial business responsible for the hallmarking of precious metals since 1300.  We are now seeking two permanent Assistants to work part-time at an offsite facility in Central London, applying laser hallmarks to jewellery items.  Each post will cover for the other during holiday periods.

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