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

Brexit Impact Survey Results

In February The British Hallmarking Council, of which the Goldsmiths’ Company Assay Office is a member, conducted a national survey of businesses in the precious metal jewellery and silver sectors, to better understand attitudes towards hallmarking and to explore the impact of Brexit. 

Date Published: 17 April 2019

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Grand National Trophy 2019

The 2019 Grand National trophy has been designed for the third year by Shannon O’Neill.  It was shaped like a human antibody to carry the sponsor’s message of health and science.  Candice Devine hallmarked it in March with a large display mark on the front of the base.

Date Published: 08 April 2019

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