In 1st grade silver jewelry, the stamp '925' is marked as a hallmark. The stamp is symbolized in a sword. This is also called Sterling Silver. The first silver content is also called sterling silver. It consists of 925 parts (92.5%) of pure silver and 75 parts (7.5%) of copper. This is the most common silver grade for jewelry. This is due to the beautiful white color and good workability. In England, the first grade of silver is also called Standard Silver. Internationally this is called Sterling Silver. This silver content is stamped with a .925 hallmark. A funny fact is that goldsmiths in Peru do not work with .925 silver, but with .950 silver. This alloy has an even more beautiful and white shine than .925 silver. This alloy is hard enough to make silver jewelry.