More than 250 years in business providing specialist Hallmarking Services, UKAS accredited Analytical Services and Diamond Verification Services.
Joined March 2012
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Please note that we will no longer be posting updates on this platform after February 2026. Thank you for engaging with us here in the past. Please follow Sheffield Assay Office on Linked In or Facebook or sign up for our newsletter at bit.ly/35HTAMN
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Bradbury's Book of Hallmarks is a unique, pocket sized reference book, providing you with the marks of origin on English, Scottish and Irish precious metals. Here's how to get a copy from Sheffield #AssayOffice: #Hallmarking bit.ly/2OzSJGv
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Are you interested in finding out more about the process behind our #DiamondVerificationService? Our short information video shows how we accurately identify the presence of natural or synthetic diamonds - take a look: #AssayOffice bit.ly/3m1sSYJ
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To obtain a legal 'Authorisation for Change of Use' certificate after re-working a #hallmarked item, you *must* meet several conditions. Find out what they are here: #AssayOffice bit.ly/2CDSKUd
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In the UK it is illegal to sell any item as gold, silver, platinum, or palladium unless it's #hallmarked (exemption weights apply!) This video shows you what a hallmark looks like and what information to look for in shops or a seller's website: bit.ly/3mUVZNF
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Our #AnalyticalServices department always goes above and beyond for our customers! We offer a collection service and our team works 'out of hours' to limit any downtime for your company. Why not try us for your testing and analysis requirements? bit.ly/367weQo
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"All that glitters is not gold!" - Watch out! Are you buying the real thing? Learn how to make sure you're not being sold a dud... #AssayOffice bit.ly/2OUADir
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It's #TestimonialTuesday and we're delighted that Mary Foye of B Braun Hospicare Ltd said we've been "a great support in recently weeks, very collaborative and a pleasure to deal with as usual". Pleased to be of service Mary. More reviews at bit.ly/2WoqHDg
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If you are interested in the Sheffield #silver industry and precious metal #hallmarking then you may find the history of Sheffield #AssayOffice fascinating! You can read all about us here: bit.ly/336ACwZ
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This educational article outlines the basic principles of ED-XRF (Energy Dispersive X-Ray Fluorescence), and how we can use it to analyse precious metals and give fast and accurate results to our customers across a wide range of industries: #AssayOfice bit.ly/31BWOSs
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Did you know that all four UK #AssayOffice's agreed to change the fineness mark for #Palladium? Click here to find out why: bit.ly/33x8Iup
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Our Metal and Alloy Analysis team are able to provide you with a detailed report about any metal - this can be helpful when it comes to recycling the materials! Want to find out more? Click here: #AssayOffice bit.ly/2Rn8p2V
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From registering a sponsor's mark & ordering punches to submitting your item, check out our handy guide for everything you need to know to get your precious metal #hallmarked: #AssayOffice bit.ly/2rGfEbz
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When purchasing second-hand or vintage jewellery, it is important to know what you're buying and whether the item is authentic. Sheffield Assay Office's #hallmarking and #DiamondVerificationServices can help! Find out more: bit.ly/3FvxaCm
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#LaserMarking is an ideal process for clearly and accurately marking a range of logos, signatures and serial numbers for decorative, promotional or engineering purposes. So not just for hallmarking precious metals! Find out more: bit.ly/2qs3FOA
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Have you seen the excellent collection of videos on our website? Click here to take a look and find out more about how our laboratory analyses metals and alloys and see our state of the art equipment used in our #DiamondVerificationServices: bit.ly/3Bt5HMF
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There are many reasons why metals are analysed in healthcare, for example: to detect any toxic elements or simply for product development. Our #AnalyticalServices department pride themselves on reliable and confidential services. Find out more: bit.ly/34RTRMy
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Every month we release a new edition of Discover - the Sheffield #AssayOffice newsletter. Are you up to date? You can sign up here: bit.ly/3erwKxt And take a look at our past issues here: bit.ly/33x8F1H
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We were delighted to offer a hugely talented group of Yorkshire Artspace Silver Fellows the opportunity to tour our facility at #SheffieldAssayOffice and see hallmarking in practice along with the fascinating history behind our collection. Read more here bit.ly/3Ok6qfg
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We've just received this lovely review from Victoria Hinds of Toriana Jewellery this #TestimonialTuesday. Thank you Victoria, it's always a pleasure to hear that our valued customers are delighted with our services. Read more great reviews at bit.ly/2WoqHDg
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