For example, the price of 3g 18K gold is 3*262.5=787.5 RMB.
The gold content of 1K is 4. 1667%, and 18K is 18×4. 1667%=75%, that is, the gold content of "18K gold" jewelry is 75%. "18K platinum" is 75% gold and 25% palladium or nickel.
K-gold has strong plasticity and can be used to make all kinds of colorful gold jewelry, so the price of K-gold is not calculated by the content of gold, because its main value lies in the process according to the style and production process, so the price of K-gold is closely related to the process. K-gold, a very difficult technology, sometimes costs about 900 yuan a gram, far exceeding any precious metal.
Extended data:
The most common "18K gold" in China market has a gold content of 18×4. 1666=75%, and the ornaments should be marked with "18K" or "au750"/"g750".
Because it contains 25% other metals, 18K gold can also be made into different colors, such as white, yellow and rose red, which are called white 18K gold, 18K rose gold respectively.
Because there is a certain proportion of other metals in K gold, its stability will be reduced and some surfaces will change color. If properly maintained, the general 14K, 18K and above gold is not easy to fade.
The value of K gold is mainly in design and technology, and the value of gold is mainly reflected in purity and weight. 8K gold jewelry is very popular abroad, and some top jewelry designs 18K gold jewelry are of high value.
Baidu encyclopedia-18K gold
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