In the jewelry, there are two types of labeling methods in the code of gold: 1, AU, this is the golden chemical symbol, which can be found in the element cycle table; Abbreviation, representing gold. This content: 999 represents the content of 99.9%, which is often referred to as thousands of gold. If it is AU750, it means that the gold content is 75%. There is also a method of 24K, 18K, 14K, etc. 24K is the labeling of foot gold. 18K is 75%of the gold content.
In the jewelry, there are two types of labeling methods in the code of gold:
1, AU, this is the golden chemical symbol, which can be found in the element cycle table; Abbreviation, representing gold.
This content: 999 represents the content of 99.9%, which is often referred to as thousands of gold. If it is AU750, it means that the gold content is 75%. There is also a method of 24K, 18K, 14K, etc. 24K is the labeling of foot gold. 18K is 75%of the gold content.