92.5% silver mixed with 7.5% copper is sterling silver. In jewelry it is usually marked 925. Any other mark such as 555 or the very misleading .925, instead of 925, is not sterling. The remainder of...
One of the most common alloy is sterling silver, which has 92.5% of silver (Ag) and 7.5% of Copper (Cu).The silver content can also be measured in milisimal fineness as 925 or 925 0/00The reson for...