When it comes to manufacturing jewellery and silverware, precious metals (silver, palladium, gold and platinum) are rarely used in their purest form. Instead, they are usually alloyed with lesser metals to achieve a desired strength, durability, and colour. 

It is not possible to detect the precious metal content of an item by sight or by touch. It is, therefore, a legal requirement to have items consisting of silver, palladium, gold or platinum independently tested and then hallmarked before they can be described as such. Items must bear a hallmark at point of sale, subject to the following weight exemptions:

Silver: mandatory for items above 7.78 grams

Gold: mandatory for items above 1 gram

Palladium: mandatory for items above 1 gram

Platinum: mandatory for items above 0.5 grams

Sylvera London is registered with the Goldsmiths Company, ensuring our precious metal jewellery is compliant with the UK’s hallmarking regulations. All stock is subject to an internal confirmation process to ensure it meets the UK’s hallmarking regulations before it is dispatched to our customers.

(For articles that are below the UK hallmarking Act’s mandatory weight for hallmarking Sylvera London operates a separate due diligence process which involves periodic voluntary testing of items that fall below the mandatory weight to ensure they meet the minimum fineness requirement.)

Find out what a hallmark looks like here.