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K gold jewelry is made by adding other metals to its gold material
K gold jewelry is made by adding other metals (such as silver and copper) to its gold material, also known as "opening gold" or "color gold".
K gold jewelry is made by adding other metals (such as silver and copper) to its gold material, also known as "opening gold" or "color gold". Due to the varying amounts of other metals added, different K numbers are formed in K gold jewelry.
The size and gold content of K number are as follows:
24K, over 99%; 22K,91.7%; 21K,87.5%; 18K,75%; 14K,58.5%; 12K,50%; 10K,41.66%; 9K,37.5%; 8K,33.34% ; 6K, 25%.