All my jewellery complies with the Hallmarking Act of 1973.
All items of jewellery over 7.78grams will have the Full Traditional UK Hallmarks from the London Assay Office.

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A hallmark is a legally recognized mark stamped on precious metal items, such as jewellery and silverware, to certify their authenticity and quality. In the UK, hallmarks are an essential part of ensuring consumer confidence and protecting buyers from fraud or misrepresentation.

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Precious metals are rarely used in their purest form but are usually alloyed with other metals for workability, durability, wearability. It isn't possible to detect an article's precious metal content by sight or touch. Therefore, it is a legal requirement for an Assay Office to hallmark articles containing precious metals if they are described as such.

Weight exemptions apply for jewellery below certain weights -  for silver under 7.78g, gold and palladium under 1g, and platinum under 0.5g - the UK hallmark is not mandatory, therefore some jewellery of less designated weights may not have the hallmark marks by default. If you want the jewellery with this mark anyway - let me know about it.

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What Does a Hallmark Indicate?

A hallmark in the UK typically includes several components:

Sponsor's Mark (Also known as Maker's Mark. Compulsory mark): Identifies the maker or sponsor of the item.
Metal Standard Mark: Confirms the purity of the metal (e.g., 925 for sterling silver or 18 for 18-carat gold).
Assay Office Mark: Identifies which of the four UK Assay Offices tested and marked the item (London, Birmingham, Sheffield, or Edinburgh).
Date Letter (optional): Indicates the year the item was hallmarked.
Each of these marks is applied after rigorous testing of the jewellery's metal to ensure the item meets the required standards.