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Our Offices

Goldsmiths' Hall

Opening hours 8am - 5pm, Mon - Fri Goldsmiths' Hall, Gutter Lane, London, EC2V 8AQ

T: 020 7606 8971

Goldsmiths' Hall
Greville Street

Greville Street

Opening hours 9am - 5pm, Mon - Fri 17 Greville Street, London, EC1N 8SQ

T: 020 7606 8971

Further Locations

Heathrow

Heathrow

In 2008 we opened the premier hallmarking facility at Heathrow.

Our partnership with Brink’s Global Services Ltd. ensures full liability coverage on precious metal articles from manufacturer through to assay and on to their final destination via the world’s premier secure transportation network.

GRAFF Diamonds

GRAFF Diamonds

We were delighted to announce the opening of our first ever hallmarking facility at a retail jeweller on 1 November 2015. The mini ‘in-house’ assay office at diamond company extraordinaire, Graff, located in the heart of London’s West End, is manned by a dedicated member of the Goldsmiths’ Company Assay Office team.

The unique facility means that luxury goods need not change location for the highest quality hallmarking. Convenience also plays a major role as the supply chain is shortened. Lastly, dedicated staff and specialist equipment ensure excellence in service whilst assuring privacy.

Allied Gold

Allied Gold

Allied Gold Limited is one of the few remaining wholesale manufacturers based in the UK.  They have been producing wedding rings in Great Britain for the past 30 years and are proud to still be doing so in their London based workshops. The company has built up a reputation for reliability, craftsmanship and innovation and offer an extensive portfolio of jewellery and gift items in the full spectrum of precious metals. 

Their highly secure premises, based in Dalston, East London, were the first to house a designated on-site hallmarking facility run by The Goldsmiths’ Company Assay Office. 

Guides & Useful Downloads

Including our standard price list, hallmarking guides, hallnotes, terms and conditions and details on our expert services.

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