Protecting consumers Assuring quality Building trust

Hallmarking since 1457

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Our Services


We have been testing and hallmarking precious metals for more than 550 years. Our local and international clients trust us to produce perfect hallmarks every time, and that is why we are world leaders in hallmarking.

We pride ourselves on our ability to tailor our services to suit each client, whether they require artisanal hand marking or laser marks using the latest technology.

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Our innovative distribution service is designed to help our clients streamline logistics and reduce workload.

Whether you are importing large quantities of goods from abroad or submitting individual items for a number of customers, we are able to hallmark and package those goods and take care of final mile delivery.

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Laboratory Services (Precious metal testing and analysis). Our Laboratory services are accredited to ISO17025 for the analysis of platinum, gold, palladium, and silver.

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Our expert staff can help you achieve your business goals through the design and management of tailored solutions to meet your needs.

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Laser Engraving

Our laser engraving facilities allow us to apply the highest quality hallmarks, logos, serial numbers, and more. No matter how delicate the item or how complex the request, we have the technology and expertise to meet your needs.

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About Section Image

A 15th Century company with a 21st Century approach

Our overarching purpose as a business is to protect consumers. We have been committed to that purpose for more than 500 years, and have built our reputation on our integrity, strength of character, and our standing as an independent body.

We are the busiest Assay Office in the UK because our customers know that we will deliver the highest quality services each and every time.

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What our clients say about us

The Edinburgh Assay Office understands silversmiths and works closely with them to minimise production problems where hallmarking is concerned. My work comes back in such a good state that little needs to be done to tidy it up; a huge help. The EAO is an example of how to conduct a thriving business in a helpful and courteous manner.

Malcolm Appleby Silversmith

I’ve been a customer of Edinburgh Assay Office for 36 years and their service just gets better and better. The staff are most helpful and a pleasure to deal with, plus provide an outstanding service. The attention given to the work is matched by the very best hammer marking skills. I’m also impressed with the laser department. Turnaround times are excellent. I highly value the Edinburgh hallmark, as do my customers.

Graham Stewart, Maker Silversmith

Edinburgh Assay Office is a reliable and friendly business to deal with. Staff are well-informed (and very patient!) and they are always willing to discuss the work that needs to be hallmarked, either on the phone or in person. This is especially helpful when submitting unusual objects, such as mixed-metal items. I’ve been consistently pleased with the results, both for large feature marks and small discreet ones. Instructions for the placement of the marks are followed accurately, and the objects are treated carefully.

Hazel Thorn Silversmith

Over my career I have dealt with all the assay offices in the UK at one time or another, so when I set up my own business I knew it would be Edinburgh for me, even though we are in Devon! They are efficient, sensible, friendly and most importantly very helpful.

Catherine Bishop Jeweller

The Edinburgh Assay Office is always helpful, efficient and fast. The quick turnaround times are a huge benefit and I can’t recall a time that anything has been returned to us broken or damaged. After working with them for more than 35 years, we have developed a fantastic working relationship, but all customers, new or old, would be made to feel welcome and looked after thanks to their helpful and friendly staff.

Annette Rowan, Houlden Jewellers Houlden Jewellers

I am continually impressed by the by Edinburgh Assay Office. Any time that I have requested support from EAO, it has been swift and efficient. It makes a pleasant change to deal with a business that takes pride in providing a first class service.

Hugh Alsop Edinburgh Silver

Over the years I have dealt with the Edinburgh Assay Office, I have experienced exceptional service. The staff members are efficient, friendly and always willing to help.
A service that we request regularly is the next day turnaround, which is quick and hassle free. I would not hesitate to recommend this service to other organisations!

Sarah Keegan, Swag SWAG

I like to think we pay as much attention to detail as the team in Scotland do. The EAO enjoys being involved with customers’ business and understand their needs, frequently exceeding expectations by offering advice on processes or international requirements. It’s a great partnership and one which has grown in the same way the business has.

Ben Roberts, Managing Director Clogau Gold

Diamond by Appointment and Sharman D Neill have been using the EAO’s services for a number of years. The thing that attracted us was their reputation for care and attention in the testing and hallmarking of jewellery items and we have found this to be true. In addition we commend Edinburgh Assay Office for their prompt, individual service. They have a professional and caring staff who support and endorse the strategic direction of their Assay Master. Their online submission and tracking service is simple, clear and effective to use.

Roger Chamberlin, Diamonds by Appointment Diamonds by Appointment

My association with Edinburgh Assay Office goes back to the mid 1970s and since then the skills, technology and working practices have improved, expanded and evolved and the work done these days causes minimal or no damage through sampling or marking. The technical staff are very approachable and down to earth and can help with any queries on punch size, style, types of marks and position, this is especially helpful for anybody new to the hallmarking process.

Alistair Campbell Silversmith


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