wholesale fashion owl jewelry How much is gold now?

crown jewelry wholesale 365.60 yuan per gram. Gold is the element form of chemical element (AU). It is a soft, golden, and corrosive precious metal. Gold is a rare, more precious and more valuable metal. Generally speaking, the world's gold is based on ounces. In ancient China, "beam" was a very important metal. It is not only a dedicated currency for reserves and investment, but also an important material for jewelry industry, electronic industry, modern communications, aerospace industry and other departments.
This information
1, ductility: One ounce of gold can be pulled to 50 Li Long, and its ductility makes it easy to cast. It is a good choice for making jewelry. It is the strongest in all metals. Bright and fingertips. Can produce a very thin and easy -to -rolled gold foil. One ounce of gold can be hammered to four feet of millions of feet, with an area of ​​100 square feet. The ancients made it a thin piece and made a temple and palace to decorate. These can explain the flexibility and ductility of gold.
2, the color of gold is golden yellow, with metal texture, which is not easy to break down. The density is 19.3 grams/cubic centimeter, and the melting point is 1064.4 ° C; good ductility 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 chemical resistance. It is the most. Good electroplating materials.
3, as a precious metal, gold has a good physical properties. "True gold is not afraid of fire" means that gold has high chemical stability and is not easy to respond to other substances, so there is no need to worry about oxidation and discoloration. Even in the melting state, it will not be oxidized and discolored, and it is still golden yellow after cooling. High density and heavy feel. And have good toughness and ductility and good conductivity. The color of pure gold is bright yellow, but after mixing with other metals, the color changes greatly, such as dark red gold and copper alloys and light yellow or gray -white silver -containing alloy. Gold is easily grinded into powder, which is why gold is scattered in nature. Pure gold jewelry is also easy to wear and reduce weight.
4, the golden sequence of the gold in the Menjiev cycle table is 79, that is, the golden nucleus of the gold contains 79 protons with positive charge. At the same time, because of semi -full rules, gold has good chemical stability. In the metal market, metals such as gold and 铑, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals.
5, although gold is a very soft metal, it is not as good as lead and tin. Nail printing can be drawn on pure gold. This softness makes gold very easy to process. However, this is not ideal for the manufacturer of the decorations, because it is easy to scratch the decorations, make them lose their gloss, and even affect their aesthetics. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness. Although the gold itself is non -corrosive, it has a strong chemical affinity with sulfide, and it is easy to absorb hydrogen sulfide gas in the air. The surface may show darkness, brown, red and other dark colors. The production of gold products requires many complex processes.