Golden purity is different. The three 9 99.9%of the gold are called "Thousands of Gold"; the 4 99.99%of the gold is 99.99%. It's called "100,000 Football". Thousands of gold, the mark is thousands of gold, 999 gold, GOLD999 or G999; 10,000 -foot gold, the mark is 10,000 -foot gold, 9999 gold, AU9999 or G9999. The marks of gold jewelry include manufacturers' code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code.
National standards In in accordance with the "Regulations and Naming Methods of the Pigmentation of Jewelry" The minimum value of the purity is 990, that is, the purity is not less than 990 ‰; the minimum value of the purity of the thousands of gold is 999, that is, the purity is not less than 999 ‰. In standards here, the purity range of precious metals in precious metal jewelry does not include welding ingredients, but the finished product content must not be lower than the specified purity range. regulations on the purity of gold in the national standard refer to the minimum purity value. In most of the domestic market, the purity of most gold and thousands of gold raw materials exceeds the lowest value (the purity of the foot gold reaches 995 ‰, and the purity of thousands of gold reaches 999.5 ‰). The above content refer to Baidu Encyclopedia-Golden purity
Golden purity is different. The three 9 99.9%of the gold are called "Thousands of Gold"; the 4 99.99%of the gold is 99.99%. It's called "100,000 Football".
Thousands of gold, the mark is thousands of gold, 999 gold, GOLD999 or G999; 10,000 -foot gold, the mark is 10,000 -foot gold, 9999 gold, AU9999 or G9999.
The marks of gold jewelry include manufacturers' code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code.
National standards
In in accordance with the "Regulations and Naming Methods of the Pigmentation of Jewelry" The minimum value of the purity is 990, that is, the purity is not less than 990 ‰; the minimum value of the purity of the thousands of gold is 999, that is, the purity is not less than 999 ‰.
In standards here, the purity range of precious metals in precious metal jewelry does not include welding ingredients, but the finished product content must not be lower than the specified purity range.
regulations on the purity of gold in the national standard refer to the minimum purity value. In most of the domestic market, the purity of most gold and thousands of gold raw materials exceeds the lowest value (the purity of the foot gold reaches 995 ‰, and the purity of thousands of gold reaches 999.5 ‰).
The above content refer to Baidu Encyclopedia-Golden purity