5.0 Gr. of Pure Silver grains 99.99% Puritey When producing jewelry the silversmith is usually adding copper or other metal to give the alloy hardness but it is then termed as sterling silver or .925 silver you can also fined .800 silver which is used mainly for tableware. Every respectable refinery that has the permission to trade in the market is producing silver with the purity of 99.99 %. None of the silversmiths needs silver with 99.999% such purity (which also cost more). There is no "better" product, if it is defined as .9999 all .9999 are alike !!!