Pure gold feature
Gold extracted from the mine is so soft that it even scratches with nails. So much that in the past they bite it to show that the coin was a gold. The teeth in the coin indicated that the coin was of gold. The greater the depth of the tooth in the coin, the greater the purity of the gold coin. You may also have seen that athletes who receive the gold medal have placed it in their teeth to show that the medal they have is of high value.
, of course, due to the soft gold, the shape of the gold has changed over time. And it cannot be used in decorative artifacts. But in order to be able to use gold in decorative artifacts, they must combine it with other metals to have high strength and hammering.
The concept of gold
Gold grade is called the pure gold ratio used in the piece to the total weight of the gold piece. To understand this concept, we consider pure gold weight 1000. That is, there is 1,000 grams of gold in one kilogram of pure gold. When we talk about 750 gold, there is actually 750 grams of gold in one kilogram. In other words, 75 % is pure gold. Or when we talk about gold 705, in fact, in a kilogram, there is 705 grams of pure gold.
What is the difference between 2ct gold with 2ct?
Gold is the best gold in terms of resistance and purity. In fact, gold means that 2 units of 5 units of a piece of gold are made of this precious metal and the other two are made up of other metals. Gold has a 5 % pure gold.
Gold is a completely yellow and bright and purest golden type that can be used in the jewelry industry.
The question of which gold artifacts is better than That is one cannot provide a single response. Because in different countries of the world that have accepted different grade as standard. For example, in Iran, gold, in Saudi Arabia, and in the Indian subcontinent, gold is formalized as a standard.
Gold alloys
Gold alloys include zinc, copper, nickel, iron, cadmium, aluminum, silver, platinum and palladium. The only pure colored metals in nature are gold and copper. All other metals are white or gray, although they affect the color of gold alloys in various ways. Gold is produced in the four main colors of yellow gold, white gold, rosegold and green gold.
Yellow gold is the most popular color. This gold alloy usually contains some silver, copper and zinc. Yellow gold is anti -allergic, meaning that it is unlikely to cause allergic reaction in the person because it is combined with silver.
White gold looks like silver or platinum. White gold is a gold alloy with platinum or palladium and is a popular gold for men. Nickel and zinc are also additives to this type of gold. White gold is extremely durable and scratch -resistant because of the hardness of platinum or palladium.
The presence of copper gives Rosgold gold, red. This type of gold may also contain some silver. Copper and silver are both cheaper metals that make Rosegold gold an economic option for those who do not want to spend a lot of money to buy gold.
Green gold is a combination of gold, silver and sometimes copper. Except for silver it gives very little green to green gold. This is the only alloy that exists naturally. Cadmium can also be used to make green gold.