Any item of sterling silver jewellery sold in the UK, weighing more than 7.78g, needs to be hallmarked by law in accordance with The Hallmarking Act
All my silver jewellery over 7.8g is tested and hallmarked at the London Assay Office and given my unique makers mark (CJH). A hallmark guarantees the quality and purity of the silver as solid sterling and nickel free. It is your assurance of quality.
You may see items for sale elsewhere marked 925 – this does not prove it is sterling silver. Only a recognised hallmark offers you that guarantee.