Pure silver is generally far too soft to be used for jewellery so is combined with other elements to improve its durability and colour. The most popular silver mix used for jewellery is Sterling Silver, which consists of 92.5% pure silver alloy with copper usually making up most of the other 7.5%. However, there is at least one company currently producing 925 (i.e. 92.5% silver or sterling silver) silver using a combination of different elements to help reduce tarnishing significantly. This is a new product though and unlikely to filter through to more mainstream silver jewellery for some time.
In the UK it