glass jewelry wholesale china Why does war rise in gold
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glass jewelry wholesale china Why does war rise in gold
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below wholesale jewelry closeouts Before the facts become the facts, the expected change of dominance is expected: the war after World War II was a local war, and the impact on the world was within a certain range. Therefore, the war premium continued for a long time.
one is an outbreak of a sudden war. Generally, in addition to people's expectations, the impact on the price of gold also erupts. After the price of gold rose rapidly, there is a lot of tendency to fall. R n The second, before the outbreak of the war that people expect, before the war broke out, the price of gold has followed the expectation. The outbreak announced the end of the rising price of gold.
Extension 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.
The international 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 symbols of gold are 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.
The color of gold is golden yellow, metal luster, difficult to break down. 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.
It pure gold has good anti -chemical corrosion, and is the best electroplating material.
Gold, as a precious metal, has good physical characteristics. "Real Gold is not afraid of fire" is that the chemical stability of gold is very high. It is not easy to chemically react with other materials. You don't have to worry about oxidation and discoloration.
A even if it is melted, it will not be oxidized and discolored, and the golden glitter is still glitter after cooling. The density is strong and the feel is heavy. Good toughness and ductility, good guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
The atomic order in the Menjiev cycle table is 79, that is, the golden nucleus of the gold contains 79 protons, and the proton belt is positive.
, at the same time, because it meets the semi -full rules, gold has good chemical stability. In the metal market, gold and cricket, 铑, 钯, 锇, 铱, platinum and other metals are collectively referred to as precious metals.
although gold is a very soft metal, it is not as good as lead and tin metal. Use nails on pure gold to draw traces. This softness makes gold very easy to process. However, this point is not ideal for the maker of the decoration, because it is easy to make the decorations hurt and make it make it make it wound and make it it. Lost luster and even affect beauty.
So when making jewelry with gold, copper and silver must be added to improve their hardness.
It gold is forged and easy to extend, which can be crushed to a transparent and transparent green foil with a thickness of 0.001 mm. 0.5 grams of gold can be pulled into a 160 -meter -long golden.