3 thoughts on “What is the gold content of the national standard”
Stuart
The national standard gb11887-89 stipulates that the gold content per K (the abbreviation of carat in English and karat in German, often written as "K") is 4.166666%
9K = 100% / 24 * 9 = 37.5% (375 ‰)
14K = 100% / 24 * 14 = 58.333% (585 ‰) for convenience identification, set it at 58.5%
18K = 100% / 24 * 18 = 75% (750 ‰)
22K = 100% / 24 * 22 = 91.6666% (916 ‰) for convenience identification, set it at 91.6%
in theory, 100% gold can be called 24 karat gold, but in reality, it cannot be 100%.Gold, Therefore, China stipulates that only gold with a content of more than 99.6% (including 99.6%) can be called 24K gold. These K-gold contents are the general specifications of jewelry. According to the national regulations, gold jewelry lower than 9K cannot be called gold jewelry
extended data:
as far as the current technology is concerned, it is still impossible to extract pure gold materials with a purity of 100%. Therefore, the gold level standard k, which indicates the content of pure gold in gold products, generally refers to pure gold as 24 K gold, but it is theoretically 100% gold and does not exist in practice
therefore, in the national standard, the non-standard method of "24K gold" shall not be used for the gold content of gold jewelry marked by merchants. Since pure gold is called 24K, that is, the theoretical gold content is 100%, 1K means that the gold products contain pure gold accounting for 1 / 24, about 4.16%. 18 K gold means that the gold content is 18 / 24, that is, 75% pure gold, and the rest is other materials such as silver or copper
The national standard gb11887-89 stipulates that the gold content per K (the abbreviation of carat in English and karat in German, often written as "K") is 4.166666%
9K = 100% / 24 * 9 = 37.5% (375 ‰)
14K = 100% / 24 * 14 = 58.333% (585 ‰) for convenience identification, set it at 58.5%
18K = 100% / 24 * 18 = 75% (750 ‰)
22K = 100% / 24 * 22 = 91.6666% (916 ‰) for convenience identification, set it at 91.6%
in theory, 100% gold can be called 24 karat gold, but in reality, it cannot be 100%.Gold, Therefore, China stipulates that only gold with a content of more than 99.6% (including 99.6%) can be called 24K gold. These K-gold contents are the general specifications of jewelry. According to the national regulations, gold jewelry lower than 9K cannot be called gold jewelry
extended data:
as far as the current technology is concerned, it is still impossible to extract pure gold materials with a purity of 100%. Therefore, the gold level standard k, which indicates the content of pure gold in gold products, generally refers to pure gold as 24 K gold, but it is theoretically 100% gold and does not exist in practice
therefore, in the national standard, the non-standard method of "24K gold" shall not be used for the gold content of gold jewelry marked by merchants. Since pure gold is called 24K, that is, the theoretical gold content is 100%, 1K means that the gold products contain pure gold accounting for 1 / 24, about 4.16%. 18 K gold means that the gold content is 18 / 24, that is, 75% pure gold, and the rest is other materials such as silver or copper
reference source: Baidu Encyclopedia - thousand gold
reference source: Baidu Encyclopedia - gold content
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