Home About Us Services Library & Silver Collection Testimonials Resources Latest News & Press Contact Us Videos A collection of short videos describing the different services and processes provided here at Sheffield Assay Office. Here at Sheffield Assay Office we have been providing hallmarking services since 1773.. Our Analytical Services department has been providing testing services to the medical industry for more than 30 years... Our UKAS accredited Analytical Services offer cutting edge technology from state of the art facilities and with over 250 years' experience… Located in the heart of Sheffield's traditional steel foundries, our Analytical Services laboratory tests a wide range of metals and alloys… Our Diamond Verification Services uses specialist equipment and hi-tech instruments to identify a diamond's true origin as natural or lab grown… What to look for when buying precious metal items... In the UK it is illegal to supply or offer to supply any item as gold, silver, platinum, or palladium unless it's hallmarked. The hallmark is your guarantee. This video shows you what a hallmark looks like, and what it tells you. It also shows the information to look for in shops or a seller's website. « Back to Resources Resources Publications Downloads Useful Links Videos Contact Us Full Name* Email* Phone Number Enquiry* Enquiry is regarding General Enquiry Hallmarking Services Analytical Services Submit Home Privacy Policy Cookies Latest Covid Statement » Sheffield Assay Office, Guardians' Hall, Beulah Road, Hillsborough, Sheffield, S6 2AN • Tel: +44 (0)114 231 2121 © 2021 Sheffield Assay Office