Handmade Kazaz Silver Knot Ring Wide-6As you know most of silver jewelry known as silver. This number shows purity of silver. International acceptance of silver jewelry purity is which shows compound ratio of silver material. It means 92. 5% silver and 7. 5% of copper compound. You have to use this ratio to process any type of silver jewelry because of softness of pure silver. However jewelers have to work with 1000 grade 100% pure silver to proces hand made silver kazaz jewels. Working