k gold introduction

Generally, the more gold silver ratio k, the color green; containing a large proportion of copper, the color is purple. In the early days of liberation, China's k gold was calculated at a rate of 4.15% per k. After 1982, it was unified with international standards, with a standard of 4.1666% per k.

Use "k gold" to indicate the purity of gold

The national standard GB11887-89 stipulates that each gold (English carat, German karat abbreviation, often written "k") gold content is 4.166%, so the gold content of each opening gold is (the national standard in brackets):

8k=8*4.166%=33.328%(333‰)

9k=9*4.166%=37.494%(375‰)

10k=10*4.166%=41.660%(417‰)

12k=12*4.166%=49.992%(500‰)

14k=14*4.166%=58.324%(583‰)

18k=18*4.166%=74.998%(750‰)

20k=20*4.166%=83.320%(833‰)

21k=21*4.166%=87.486%(875‰)

22k=22*4.166%=91.652%(916‰)

24k=24*4.166%=99.984%(999‰)

24k gold is often considered to be pure gold, which is "1000‰", but the actual gold content is 99.99%, which is 23.988k.

Gold containing more than 99% pure gold is also known as "foot gold."

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