Leofoo's jewelry stamp contains the manufacturer's code, the name and content of precious metal materials, and the appearance only needs to be tested by the overall modeling and processing quality of the jewelry.

Thousands of pure gold: the gold content of not less than 999 is called thousands of pure gold, which is the highest value in jewelry color naming. The stamps are thousands of gold, 999 gold, 999 gold or g999 gold. Pure gold: pure gold with a gold content of not less than 990. The stamps are pure gold, 990 gold, 990 gold or g990 gold.

In theory, 100% gold can be called 24K gold, but in reality it is impossible to have 100% gold, so China stipulates that gold with a content of more than 99.6% (including 99.6%) can be called 24K gold.

These kinds of K gold contents are general specifications of jewelry, and gold jewelry below 9K is not called gold jewelry according to national regulations.

Extended data:

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.

In particular, consumers need to be reminded that 18K gold jewelry has three colors: yellow, white and red. White 18K gold is an alloy of gold and nickel, zinc, silver, copper and other elements, while platinum jewelry is not platinum (platinum) products.

Baidu encyclopedia-thousands of gold

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