About
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.
Key services
- Assay and Hallmarking
- Conservators of Antique Silver and Jewellery
- Engravers
Student Hallmarking Package
All full and part time students on a current jewellery or silversmithing course can register online free of charge for a 10 year laser-only registration. Register here https://www.assayofficelondon.co.uk/registration/registration?type=Student&new=true
Opening times
Goldsmiths' Hall: 8am - 5pm, Mon - Fri
17 Greville Street, Hatton Garden: 9am - 5pm, Mon - Fri
Payment types
- Cards
- Cash
Inclusion in the Goldsmiths' Centre Supplier Directory does not constitute an endorsement or recommendation by the Goldsmiths’ Centre or its affiliates. The Goldsmiths’ Centre does not guarantee the work of any supplier or related service provider and we are not responsible for the present and future performance of businesses featured here. It is the customers’ responsibility to research and verify that all necessary licenses, bonding, or liability insurance is held by these suppliers.