What is karat gold? Karat gold (or kaijin) is an alloy formed by fusing gold with other metals. The “K” of karat gold is a compilation of the loanword “Karat”, the full notation: Karat gold (i.e. K gold), “AU” or “G” is the symbol used internationally to indicate the purity (i.e. gold content) of gold. The following Wen Cheng jewelry editor will take you to see what is the gold content of K gold, how to calculate the gold content of K gold, if you don’t understand, read it carefully.
K gold jewelry is characterized by less gold, low cost, and can be formulated into various colors, and improves hardness, which is not easy to deform and wear. K gold is divided into 24K gold, 22K gold, 18K gold, 9K gold, etc. according to the amount of gold.
What is the gold content of karat gold
At the current level of technology, it is not yet possible to extract pure gold materials with 100% purity. Therefore, the gold standard K that indicates the pure gold content in gold products generally refers to pure gold as 24K gold, but it is gold with a theoretical gold content of 100%, which does not exist in practice. Therefore, in the national standard, merchants are not allowed to use the non-standard standard method of “24K gold” to indicate the gold content of gold jewelry. Since pure gold is called 24K, that is, the theoretical gold content is 100%, then 1K means that gold products contain pure gold accounting for 1/24, about 4.16%. 18K gold means that the gold content is 18/24, that is, 75% of pure gold, and the rest is other materials such as silver or copper.
K gold content comparison table
8k=84.166%=33.328%(333‰) 9k=94.166%=37.494%(375‰)
10k=104.166%=41.660%(417‰) 12k=124.166%=49.992%(500‰)
14k=144.166%=58.324%(583‰) 18k=184.166%=74.998%(750‰)
20k=204.166%=83.320%(833‰) 21k=214.166%=87.486%(875‰)
22k=224.166%=91.652%(916‰) 24k=244.166%=99.984%(999‰)
One of the characteristics of gold is its softness, so it is difficult to create a variety of fine styles, especially when it is easy to lose when setting treasures such as pearls, gemstones and jadeite. Therefore, people add a small amount of silver, copper, zinc and other metals to gold to increase the strength and toughness of gold, and gold jewelry made in this way is also called K gold. K gold can be formulated into a variety of colors according to needs, and the internationally popular K gold jewelry has a variety of colors, and everyone is common to yellow and white. Gold mixed with 25% palladium or nickel, it will become white, the main component of it is gold, which is called white gold.
As the saying goes, “gold has no feet”, and generally gold jewelry contains less than 1% of other metals. For the quality of gold products, the national standard has very clear provisions, that is, each gold jewelry sold by merchants must be listed and marked with its gold content and weight. The weight of gold jewelry is always in the national legal unit of measurement. The gold content should use “K gold” (excluding 24K gold), “full gold” (gold content not less than 99%), “thousand foot gold” (gold content not less than 99.9%), and must not use “thousand foot pure gold”, “pure gold” and “24K gold”, “9999” and other non-standard standard methods that do not actually exist.
