nicki minaj jewelry wholesale How many pounds of gold are the current gold in ancient times?

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nicki minaj jewelry wholesale

2 thoughts on “nicki minaj jewelry wholesale How many pounds of gold are the current gold in ancient times?”

  1. Rachael

    wholesale sterling silver jewelry from thailand Gold measuring 31.25, which is 16 two pounds °
    31.25 × 10000 = 312500
    before the 19th century, the level of gold productivity in human society was very low. In the history of the millennium, human beings produced a total of less than 10,000 tons. For example, only 200 tons of gold produced in the 18th century in the 18th century.
    Due to the discovery of a series of gold resources in the 19th century, the gold output has been greatly improved since then, especially in the 50 years in the second half of the 19th century, the gold output exceeded the previous 5,000 years. Total amount. In 2013, the total gold output around the world was about 2,770 tons.
    A physical properties
    1, color:
    The steam emitted when gold is melted is green; its gold powder is usually brown during the smelting process; if it is cast into a thin piece, It can also transmit green light.
    2, ductility:
    is extremely strong. 1 ounce of gold can be pulled into 50 miles long, and its ductility makes it easy to cast and is a good choice for making jewelry. Gold is the strongest in the metal.
    3, forgedness:
    INO. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 1th of 4 million and 100 square meters. The area is large. The ancients hammered it into thin slices to decorate the temples and the palace. These can explain the strong flexibility and forgedness of gold.
    The color of gold is golden yellow, metal luster, difficult to break down. The hardness is 2-3, the pure gold is 19.3, 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 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. 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.
    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. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness.

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