Ten thousand gold with a gold content of not less than 9.999 is the highest value of jewelry color naming in the market circulation. However, it is not listed in the national standard, and the imprint is Wanjinjin, 999.9 gold, au999.9 or g999.9. If you have any questions, please pay attention to Weibo's "Happiness Jewelry". Please feel free to answer your questions. The imprint of gold jewelry includes manufacturer's code, material and purity, such as X Gold 990, xau990 and X Pure Gold. Where the letter X is the manufacturer's code. When jewelry is made of precious metals with different materials or purities, the materials and purities should be indicated separately. When jewelry is too thin or too small to print, it should be accompanied by a logo containing the contents of the imprint.