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

NAJ & Goldsmiths' Company Assay Office Host Hallmarking Information Event

Held at the iconic Goldsmiths’ Hall by the Goldsmiths’ Company Assay Office and organised in partnership with the National Association of Jewellers, a series of talks were made educating members of public about the nuances of hallmarking, the future of the industry and the direction of the Goldsmiths’ Company and the NAJ.

Date Published: 20 January 2020

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Crafts Council Makers Survey

The appetite for buying craft has increased dramatically over the past ten years, and we want to see the market grow even further. To this end, the Crafts Council and eight national partners* have already surveyed thousands of consumers - now we want to understand makers’ side of the story. Take survey.

Date Published: 14 January 2020

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