Sterling silver is a durable and affordable precious metal as well as a great choice for everyday wear. It's also hypoallergenic, so you don't have to worry about nasty reactions. Sterling silver is an alloy that is made up of 92.5% pure silver. The remaining part is other metals (usually copper), which are used to add durability and help the jewellery hold its shape. 925 Sterling is the standard when it comes to quality jewellery - you'll find it stamped on pieces from many of the world's biggest brands.