Hallmarks are marks applied to precious metals to indicate the amount of pure metal in the alloy along with the makers mark unique to the person who made it.
If your sterling silver jewellery weighs more than 7.78g it will carry a full UK Hallmark from the London Assay office.
If your gold jewellery weighs more than 1g it will also carry a full UK Hallmark.
This is not only a legal requirement but also your guarantee that you are getting exactly what you thought you were getting.
You can find more about the history of Hallmarking on the Assay Office website https://www.assayofficelondon.co.uk/about-us/history-of-hallmarking
