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

The Goldsmiths’ Company Assay Office Launches Video Guides

The Goldsmiths’ Company Assay Office has launched a series of video guides to help its customers, inform consumers, and provide information on hallmarking.

The guides use simple explanation with clear subtitles. We believe these will complement our visits, tours, events, and website to further the understanding of assaying and hallmarking.

Date Published: 21 March 2019

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Easter Holiday 2019 Closing Times

Our Easter holiday 2019 closing times are as follows:

Goldsmiths’ Hall
Thursday 18 April – close at 4pm.  The office will reopen on Tuesday 23 April at 8am.

Greville Street
Thursday 18 April – close at 4pm.  The office will reopen on Tuesday 23 April at 9am.

Date Published: 13 March 2019

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