999.9 generally refers to 10,000 -foot gold, and its gold content is not less than 999.9. The gold jewelry made is generally marked with AU9999 or G9999. Generally, it is processed by a welded welding process. To recognize the quality inspection logo, it is best to choose a famous merchant when buying. Gold jewelry often heard how much K. The different K golden purity here is different. 1K's gold content ratio is about 4.166%, 24K gold content is 99.99, and the K gold that is usually seen is 24K, 22K, 20K, and 18K. Generally, the less gold content, the more diverse the shape of the jewelry. When buying gold jewelry, you can compare several specialty stores, and then choose the price and style for you. It should be noted that the price of gold jewelry may be different every day. When buying, it is best to choose a low price to buy, so that you can spend less money. This information: 1, gold (GOLD) is a single form of chemical element (AU), which 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. The chemical symbol of gold is AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of Aurora, a goddess of dawn in Roman mythology, means shining dawn. 2, the second to none. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 1 foot thick and 100 square meters of 4 million. The ancients hammed it into thin slices to decorate the temples and the palace. These can explain the flexibility and forgedness of gold. The color of gold is golden yellow, metallic luster and difficult to decompose. The density is 19.3g/cm3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good anti -chemical corrosion, is the best electroplating material
999.9 generally refers to 10,000 -foot gold, and its gold content is not less than 999.9. The gold jewelry made is generally marked with AU9999 or G9999. Generally, it is processed by a welded welding process. To recognize the quality inspection logo, it is best to choose a famous merchant when buying. Gold jewelry often heard how much K. The different K golden purity here is different.
1K's gold content ratio is about 4.166%, 24K gold content is 99.99, and the K gold that is usually seen is 24K, 22K, 20K, and 18K. Generally, the less gold content, the more diverse the shape of the jewelry. When buying gold jewelry, you can compare several specialty stores, and then choose the price and style for you. It should be noted that the price of gold jewelry may be different every day. When buying, it is best to choose a low price to buy, so that you can spend less money.
This information:
1, gold (GOLD) is a single form of chemical element (AU), which 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. The chemical symbol of gold is AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of Aurora, a goddess of dawn in Roman mythology, means shining dawn.
2, the second to none. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 1 foot thick and 100 square meters of 4 million. The ancients hammed it into thin slices to decorate the temples and the palace. These can explain the flexibility and forgedness of gold. The color of gold is golden yellow, metallic luster and difficult to decompose. The density is 19.3g/cm3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good anti -chemical corrosion, is the best electroplating material