What is common in the general market is thousands of gold, that is, three nines of gold and four nines of gold, that is, 10 thousand pure gold, all of which are speculated. It is difficult to achieve that purity in this process. As for the five nines of gold you said, it is even more impossible. It's a gimmick of business hype, and the purity is not that high. Yiduo jewelry answers for you.