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Testing and hallmarking precious metals for over 700 years

The Goldsmiths’ Company Assay Office is where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. We have been responsible for guaranteeing the purity of items made of precious metals since 1300, when the hallmarking statute was passed. We became the official ‘home of hallmarking’ in 1478, establishing the country’s first Assay Office at Goldsmiths’ Hall London, which still operates today.

The Goldsmiths’ Company Assay Office is where hallmarking began, and we have been testing and hallmarking precious metals for over 700 years. 

We have been responsible for guaranteeing the purity of items made of precious metals since 1300, when the hallmarking statute was passed. We became the official ‘home of hallmarking’ in 1478, establishing the country’s first Assay Office at Goldsmiths’ Hall London, which still operates today.

Our hallmark and our trade depend on integrity and trust, which underpin all our work and what we stand for.

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Online Services

Our online services give you control over your account and packet submissions. The online Contact Form is also the best way to Contact Us.
The fastest and most efficient way for your work to be processed by us is to submit your packet online. It enables you us to get all the relevant information on to our system and start the assay process quicker. Our online services enable you to:
    • Contact Us
    • Track and pay for packets
    • Amend your contact details
    • Sign up for packet ready notifications
    • Renew your sponsor's mark registration.
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Platinum Jubilee Mark

• A new commemorative mark has been designed to celebrate Her Majesty The Queen’s Platinum Jubilee • The mark can be requested from 1st November 2021 to be applied on all metals • Historically, commemorative marks have been added to the regular hallmark to signify a special event • The mark, designed by Thomas Fattorini Ltd, depicts an orb, and reflects the traditional fineness mark for platinum

In 2022, Her Majesty The Queen will become the first British Monarch to celebrate a Platinum Jubilee, seventy years of service, having acceded to the throne in 1952. To celebrate the occasion, the body which oversees UK hallmarking, the British Hallmarking Council, has sanctioned a commemorative component mark. Read more here.

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The Trial of the Pyx

One of Britain’s oldest judicial processes, the Trial of the Pyx has taken place at Goldsmiths’ Hall every year since 1871. A jury, made up of members of the Goldsmiths’ Company, checks the coins produced by The Royal Mint and sends a selection for testing by The Goldsmiths' Company Assay Office, to ensure each one is of the correct weight, size and composition.

One of Britain’s oldest judicial processes, the Trial of the Pyx has taken place at Goldsmiths’ Hall every year since 1871. A jury, made up of members of the Goldsmiths’ Company, checks the coins produced by The Royal Mint and sends a selection for testing by The Goldsmiths' Company Assay Office, to ensure each one is of the correct weight, size and composition.

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The Goldsmiths' Company

Today, the Goldsmiths’ Company family is made up of the Goldsmiths’ Company, the Goldsmiths’ Company Assay Office, the Goldsmiths’ Company Charity, and the Goldsmiths’ Centre. We work together and collaborate to support the trade, from training and development to investing in makers who live, work, create and learn in the UK; and to support civil society, from grant-making through the Charity to education provided by the Centre, and by upholding standards of hallmarking through the Assay Office.

The purpose of the Goldsmiths' Company is to contribute to British national life by supporting its related crafts, industry and trade. Today, the Goldsmiths’ Company family is made up of the Goldsmiths’ Company, the Goldsmiths’ Company Assay Office, the Goldsmiths’ Company Charity, and the Goldsmiths’ Centre.


We work together and collaborate to support the trade, from training and development to investing in makers who live, work, create and learn in the UK; and to support civil society, from grant-making through the Charity to education provided by the Centre, and by upholding standards of hallmarking through the Assay Office.de and through wider charitable and educational activity.

The main objectives of the Company are:

  • To support the precious metal and jewellery crafts, industry and trade through training, education and promotion, primarily through The Goldsmiths’ Centre;
  • To operate the Assay Office, and test the coinage of the realm annually through the Trial of the Pyx;
  • To fund and support the Goldsmiths’ Company Charity in achieving its charitable objectives;
  • To build on our traditions to enhance our contribution to life, work, education and culture in the City of London and more widely;
  • To manage our financial affairs to secure the long-term future of the Company and its activities.

 

The Goldsmiths' Centre

 

 

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