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What is the name of gold Au999.9?
"Au9999" is the expression of gold purity stipulated by the state. Gold ornaments must be printed with this logo. "Au" is the symbol of the chemical element of gold. This shows that this metal ornament is made of gold. 999 pure gold, also known as Wanchun pure gold, is the lowest purity of 999.9 thousandths of gold.

In fact, 999 gold is enough for our jewelry. No matter from the color, purity and workmanship, thousands of gold have reached the highest level of jewelry. It is also a good choice to wear some jewelry made of au750.

Extended information:

Matters needing attention in wearing Au9999 gold jewelry

1. Avoid wearing Au9999 gold ornaments, especially when doing heavy work.

2. Due to the low hardness of Au9999 gold ornaments, be careful when wearing them. Don't bump or rub hard objects. Don't pull, drag, drag them. Diamonds, in particular, should be stored separately in jewelry boxes, because different hardness will cause friction and scratches.

3.Au9999 gold jewelry should not be stored with silver jewelry, so as not to collide with each other and make the surface of jewelry silvery white. Wearing the Au9999 ring together with the platinum ring easily causes the two rings to rub against each other, and the platinum on the ring surface turns white.

4.Au9999 gold ornaments have high purity and long wearing time. It is normal that they gradually lose their luster due to sweating and other factors. In this case, the customer needs to return the jewelry to the jewelry store for cleaning.

Mercury will corrode the surface of gold. High-grade cosmetics often contain a small amount of lead and mercury. If gold jewelry often contacts cosmetics, white spots will appear on the surface of jewelry after a long time. Therefore, when wearing Au9999 gold ornaments, contact with cosmetics should be minimized. If this happens, go to a professional jewelry store for treatment and the white spots will be removed. Also avoid contact with vegetable juices containing chemical elements, such as mustard juice, cauliflower juice and fish scales.