Hallmarking

Hallmarking & Assay Information

At Isa Flamel, we take quality and transparency seriously. All of our items made from precious metals (such as gold, silver, platinum, or palladium) are hallmarked in accordance with UK law.

A hallmark is an independent confirmation that an item has been tested and verified for precious metal purity. It helps protect you and gives you confidence in your purchase.

What is Hallmarking?
In the United Kingdom, items made from precious metals must be independently tested and marked with an official hallmark by an authorised Assay Office. This hallmark confirms:

- Who submitted the item for testing (Sponsor’s Mark)
- The type and purity of the metal (Fineness Mark)
- The office that examined and marked the item (Assay Office Mark)

Hallmarking applies to items over certain minimum weights, depending on the metal used. ([Birmingham Assay Office Dealers’ Notice PDF](https://www.theassayoffice.co.uk/wp-content/uploads/2025/01/birmingham-dealers-notice-2025.pdf)

Our Hallmarking Commitment
We work with the official UK Assay Offices to ensure that every applicable piece sold on this website meets the legal standards for precious metal content and hallmarking.

Official Dealers’ Notice
Under the Hallmarking Act 1973, dealers selling precious metal goods must display an explanatory Dealers’ Notice. You can view this notice here:

[Click to View / Download the Official Dealers’ Notice (PDF)]
https://www.theassayoffice.co.uk/wp-content/uploads/2025/01/birmingham-dealers-notice-2025.pdf

This notice explains the symbols and marks you’ll see on hallmarked items.

If you have questions about hallmarks or want help identifying a mark on one of our products, please contact us and we’ll be happy to assist.