Protecting the Consumer and Servicing
the Trade with Independence and Integrity


The home of UK Hallmarking


welcome to the birmingham ASSAY oFFICE

**NEW ** Rainbow Logo Mark - Raising funds for the NHS.  Click here to find out more.

If you wish to speak to a member of our team, we would love to hear from you.  Please CLICK HERE FOR DIRECT CONTACT DETAILS FOR EACH DIVISION 


As businesses prepare to reopen over the next few weeks, we are continuing to support the Jewellery Trade and will be open Monday through to Friday.
To ensure we continue to deliver a high level of customer service during these challenging times, please review the following information: 

Opening Hours
Monday - 8:30 am - 4:00 pm
Tuesday - 8:30 am - 4:00 pm
Wednesday - 8:30 am - 4:00 pm
Thursday - 8:30 am - 4:00 pm
Friday - 8:30 am - 3:30 pm
Customer Services
To reduce waiting times for our customers, we will be increasing staffing levels to meet demands. Please note, we will continue to work to the social distancing guidelines set out by Government, and we would also ask our customers to kindly adhere to the same guidelines whilst within the Customer Services area.

We recommend avoiding the busiest times to reduce your waiting time.

Peak hours : 9.00am-10.30am and last thing 1.30pm – 3.00pm
NEW - Appointment Service & Drive Through Facility
If you would like to use our appointment service and drive through facility please call 0121 592 1205 to arrange.
Express Service 
Express Service usually needs to be booked in by 9:30 am, however, the cut off will be flexible depending on demand for this service.

Royal Mail/Courier deliveries

We are receiving Royal Mail Special delivery parcels on the days that we are operational and we can also despatch parcels back to you by Royal Mail.  Similarly, we can also accept deliveries and despatch deliveries by Courier.


Click on the button below to send an enquiry for Hallmarking or AnchorCert Pro Testing.




Birmingham Assay Office was founded in 1773 to provide assaying (testing) and hallmarking of precious metal items (gold, silver, platinum and palladium) as required by the Hallmarking Act.

It has been a centre of expert opinion and independent assessment of jewellery and precious metals for nearly 250 years.


Certificate Number:

FS 24058










Join our curator, Craig O’Donnell, for our online #BHeritageWeek event on 18th September
as he talks about the Hist…
09:08 11/09/2020
Retweet of @GemPortJeweller: 🌈 Just look at our recent laser engraving with #nhsrainbow - fascinating how
it’s done! 🌈 applied at…
07:24 11/09/2020
Retweet of @tishyaashish: Just back from hallmarking @TheAssayOffice I chose to have the NHS Rainbow logo added
to my pieces, the cost of whi…
01:06 17/08/2020
Retweet of @GemPortJeweller: ⚓️ Bespoke custom made platinum ring back from Hallmarking ⚓️ ➖ our 1st
piece marked with the @TheAssayOffice Rain…
08:28 18/08/2020
Retweet of @GemPortJeweller: RAINBOW 🌈 LOGO MARK - RAISING FUNDS FOR THE @NHSuk If you are looking
to add the Rainbow 🌈 Logo to an existing jew…
08:22 04/08/2020
Following the success of our limited edition Rainbow Logo Mark, AnchorCert Gem Lab
is delighted to announce they ca…
03:15 31/07/2020
Retweet of @TanzaniteUK: Read our Blog on hallmarking at @TheAssayOffice and what Tanzanite Jewellery we
have recently sent to them!…
04:20 25/07/2020
Retweet of @bhamts: Hallmarking Act 1973 covers law on precious metals e.g gold silver platinum
& palladium info on web…
03:30 21/07/2020
Retweet of @The_CMJ: The CMJ has teamed up with the @TheAssayOffice to promote CMJ retailers as the
first port of call for any consumer…
11:04 21/07/2020
Retweet of @anna_jeweller: Remember that gold blob from the other day? Well, making a bespoke piece by
hand isn’t a quick process. It’s still…
07:40 17/07/2020


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