A Quick Guide to Identifying Jewellery Through Hallmarks

Hallmarks are tiny stamped symbols found on jewellery that reveal important details about a piece’s origin, metal content, and authenticity. Learning to read these marks can help you better understand—and value—your jewellery.

What Are Hallmarks?
Hallmarks are official stamps applied to precious metals like gold, silver, platinum, and palladium. In many countries, they are a legal requirement and serve as a guarantee of the metal’s purity.

Understanding Metal Purity Marks
One of the most common hallmarks indicates the purity of the metal. For example, gold is often marked as 375 (9ct), 585 (14ct), or 750 (18ct), reflecting the proportion of pure gold in the alloy. Silver may be stamped 925 (sterling silver), while platinum is typically marked 950.

Assay Office Symbols
In the UK, jewellery is tested and certified by official assay offices. Each office has its own unique symbol—for example, a leopard’s head represents London, while an anchor signifies Birmingham. These marks help trace where the piece was tested.

Date Letters and Maker’s Marks
Many pieces also include a date letter, indicating the year the item was hallmarked, and a maker’s mark, which identifies the jeweller or company that created it. These details can add historical and collectible value.

Why Hallmarks Matter
Understanding hallmarks not only helps verify authenticity but also protects you from buying counterfeit or misrepresented jewellery. Whether you’re purchasing new pieces or exploring vintage finds, a quick look at the hallmark can tell you a story that goes far beyond the surface.

With a little practice, these tiny symbols become a powerful tool—helping you recognise quality, craftsmanship, and the true worth of your jewellery.