When buying gold jewelry. I dare not buy it casually because I do n’t understand how to distinguish the above labels. What is the 18K and 24K that everyone often says? Is there any standard? Or is there a difference between ingredients?
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18K is 75% of pure gold. The rest are other materials such as silver or copper
24K, that is, the theoretical gold content is 100%
one of the characteristics of gold is soft, so it is difficult to inlay the system A variety of exquisite styles, especially when it is inlaid with treasures such as pearls, gems and emeralds. Therefore, people add a small amount of silver, copper, zinc and other metals to gold to increase the strength and toughness of gold. The gold jewelry made, also known as K gold.
k gold can be prepared into various colors as needed. There are various colors of K gold jewelry popular in the world. People are common in yellow and white. Mixing 25%of 入 or nickel in gold will become white, which is the main ingredient of it is gold. This name is called white K gold.
For the current scientific and technological level, it is impossible to refine the pure gold material with a purity of 100%. Therefore, the golden position standard K in the gold content in the gold products generally refers to the pure gold as 24K gold, but it is theoretically gold with 100%gold, which actually does not exist. Therefore, in the national standard, the gold content of the merchants that the gold jewelry must not use the irregular standards of "24K gold". Since the pure gold is 24K, that is, the theoretical gold content is 100%, then 1K means that gold products contain pure gold 1/24, about 4.16%. 18K gold represents the gold content of 18/24, which is 75%of pure gold, and the rest are other materials such as silver or copper.
. As the saying goes, "Gold is not red", generally gold jewelry contains other metals with less than 1%. Regarding the color content of gold products, the national standards have clear regulations, that is, each gold jewelry sold by merchants must be listed to indicate its gold content and weight. The weight of the gold jewelry is all used in the national statutory unit. Its gold content should use "K gold" (excluding 24K gold), "foot gold" (not less than 99%), "thousands of gold" (not less than 99.9%). Pure gold "" 24K gold, "9999" and other irregular standard methods that actually do not exist.