How much is the number of gold grams allowed by the state
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How much is the number of gold grams allowed by the state
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The amount of each batch or part of the name is not greater than 1000g, and the allowance soil is 0.01g.
The volume of each batch or piece is greater than 1000g and not greater than 5000g, and the allowable soil is 0.025g.
The volume of each batch or piece is greater than 5000g and not greater than 20000g, and the allowable difference is ± 0.10g.
1 gold, silver jewelry and materials are based on gram (G) as the measurement unit.
2 The weight of the gold jewelry and material, retain two digits when writing.
3 The weight of the retail of silver jewelry, keep a decimal when writing.
4 The batch settlement weight of silver jewelry and materials retains the integer when writing.
5 retail funds and silver jewelry should indicate weight on the label of each product.
This information
The national standard "GB11887-8P" regulations: The gold content is not less than 990 ‰ of sufficient gold, and the gold content is not less than 999 ‰. At the same time, the purity of K gold also stipulates, of which 8K's gold content is not less than 333 ‰, the gold content of 18K is not less than 750 ‰, and the gold content of 24K is not less than 999 ‰.
The abbreviation of each (English carat and German Karat, often writing "K") gold content is 4.166%.
18k = 18*4.166%= 74.998%, 24K = 24*4.166%= 99.984%.
24K contains 99%gold, 22K contains 91.7%, 18K contains 75.1%, 14K contains 58.5%, and 12K contains 50%.
The gold jewelry sold on the market is divided into foot gold and K gold jewelry. According to the provisions of the national standard GB11887, the content of several common gold jewelry is:
24k -the international gold price market occasionally label There are 24K gold jewelry. According to national standards, the theoretical value of 24K gold content should be 100 %, and gold has no barefoot. Therefore, it is strictly that 24K does not exist. The sales of 24K gold in sales are incorrect and do not meet national standards.
Thousands of gold -content is 99.9%, commonly known as three 9.
The gold -content is 99.0%, above, commonly known as two 9.
18K -The content is 75.0%, and there are many colors of K gold, usually with yellow, red, and white. Among them, white K gold is actually alloy of gold, nickel, zinc, copper and other elements. It is not usually called platinum jewelry. Platinum refers to precious metal platinum (PT).