let's start with the marking 925 if your piece of jewelry whether it be a ring or a necklace maybe it would have it on the clask or on the inside of the Ring has what you see is a 925 what that's telling you is that is made out of sterling silver we're going to get into some technical terms here that 925 represents 92.5% of pure silver and that 7.5% being other metals that we've used to strengthen it.