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custom women’s jewelry Baolong Q&UN: How is gold purity expressed?

Posté le par Joyjy

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The recent sharp drop in the price of gold has attracted consumers to buy enthusiastically. Before buying gold and gold jewelry, it is necessary to have a general understanding of the purity of gold. The editor of Baolong.com is happy to share relevant knowledge with you.

Gold purity refers to the gold content in gold and gold products, which is commonly known as fineness, and specifically refers to the mass fraction and proportion of gold in gold jewelry. In theory, there is no 100% or, there will be a certain proportion of other components in gold. According to national regulations and international standards, the purity of gold is generally expressed by the thousand-point system or the K system.

The thousand-point system is to express the gold content in thousandths. Par exemple, the gold content of pure gold jewelry is not less than 990‰. Domestic jewelers advertise that the content of pure gold is high, and there is a table of thousand pure gold, which is 999‰; there are also 10,000 or pur, which is 999.9‰. The thousand-point system is a method of expressing gold purity stipulated in international standards and national standards, and it can also be said to be an international and domestic method of expressing gold purity.

The K system, or open system, is a general method of expressing gold content in international trade settlement, and it is also a method of expressing gold purity stipulated in national standards. K is the first letter of English karat, which is derived from carat. The carat is a unit of measurement to measure the weight of diamonds and was later used to indicate the purity of gold. In order not to confuse it, karat is used to express the purity of gold, and K for short. This method of expression divides the purity of gold into 24 parts, each of which is 1k, ou 1/24, called 1k. 24k gold is pure gold, 18k gold is gold with a content of 18/24, qui est 75% or; 14k gold is gold with a gold content of 14/24, qui est 58.3%, et ainsi de suite.

 

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