Gold 999.9 means that the gold content is more than 99.99%.
This golden gold is commonly known as 10,000 -foot gold or four -nine gold in the industry. It is red yellow, soft in texture, and good ductility. However, it should be noted that the gold that requires more than 99%of the gold content in my country is collectively referred to as foot gold, and even the surface of the accessories with 999.9 materials can only be marked with gold.
The expansion information:
Gold (GOLD) is a single -quality form of chemical element gold (AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" was used as a gold unit, and it was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments.
Golds are divided into several types. In addition to adding other metals, they are also divided into two types: foot gold and hard gold. The texture of the gold is soft, and the higher the gold texture, the softer the gold texture. The gold content of foot gold and hard gold is more than 99 %, but the hardness is very different.
The gold is currently the most common gold. Although gold refers to the gold content of 100 % gold, the purity of gold is less than 100 % in reality. The hardness of gold is Mo's hardness 2.5. This hardness gold can generally pull it to deformed it.
The hard gold is actually a very special gold. The special power casting process has changed the crystal structure of the gold itself, which greatly improves its hardness. The hardness of the hard gold is 9.7, which is sufficient. The gold and hardness are nearly four times, and various complex and exquisite shapes can be completed with hard gold.
The maintenance of gold:
1. The chemical of the cleaning of the cleaning will change the color of the gold, so you should take off the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue directly, otherwise it will easily cause gold decoration to fade.
3, the gold decoration should be removed when swimming to avoid chemical changes in the surface layer after encountering seawater or pool water.
4. Put the velvet cloth and put it in the jewelry box when storage to avoid friction and damage to each other.
5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation.
6. Pure gold jewelry will have a chemical reaction when it encounters water and silver. White spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while.
Gold 999.9 means that the gold content is more than 99.99%.
This golden gold is commonly known as 10,000 -foot gold or four -nine gold in the industry. It is red yellow, soft in texture, and good ductility. However, it should be noted that the gold that requires more than 99%of the gold content in my country is collectively referred to as foot gold, and even the surface of the accessories with 999.9 materials can only be marked with gold.
The expansion information:
Gold (GOLD) is a single -quality form of chemical element gold (AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" was used as a gold unit, and it was a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments.
Golds are divided into several types. In addition to adding other metals, they are also divided into two types: foot gold and hard gold. The texture of the gold is soft, and the higher the gold texture, the softer the gold texture. The gold content of foot gold and hard gold is more than 99 %, but the hardness is very different.
The gold is currently the most common gold. Although gold refers to the gold content of 100 % gold, the purity of gold is less than 100 % in reality. The hardness of gold is Mo's hardness 2.5. This hardness gold can generally pull it to deformed it.
The hard gold is actually a very special gold. The special power casting process has changed the crystal structure of the gold itself, which greatly improves its hardness. The hardness of the hard gold is 9.7, which is sufficient. The gold and hardness are nearly four times, and various complex and exquisite shapes can be completed with hard gold.
The maintenance of gold:
1. The chemical of the cleaning of the cleaning will change the color of the gold, so you should take off the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue directly, otherwise it will easily cause gold decoration to fade.
3, the gold decoration should be removed when swimming to avoid chemical changes in the surface layer after encountering seawater or pool water.
4. Put the velvet cloth and put it in the jewelry box when storage to avoid friction and damage to each other.
5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation.
6. Pure gold jewelry will have a chemical reaction when it encounters water and silver. White spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while.