Nowadays, there are more and more imitated accessories on the market, and the imitations are more and more exquisite. Some items are even difficult to identify, what’s more, the price is much cheaper than the real ones, and therefore the imitated accessories become the favor of beauty.
OK, let me introduce you the meaning of 18KGP, 23KGP
18KGP, 23KGP is the alloy symbol. They consist of two logo compositions, 18K or 23K is a logo, K represents the value, that is, the gold content, the formula is Au wt % = K / 24 x 100%, according to the national regulation GB11887-89 , the gold content of each K value for 4.166%, so you can know that 18K contains 75% gold while 23K contains about 95%.
GP is the English abbreviation for Gold Plate. This kind of logo refers to the metal materials are mainly phosphor copper, the product is made under high temperature forging, and then covered with gold plated layer. According to different requirements, the thickness can be 1mic or 3mic, so 18K or 23K which we mentioned before means gold content of gold layer. Here maybe someone is concerned “why 18KGP or 23KGP jewels are mostly white instead of yellow?” Actually, this is a confusion between pure gold and K gold. Generally, one of the characteristics of pure gold is that they are very soft, so when setting the gem in pure gold accessories, it will fall off easily. Therefore people will add silver, copper, zinc and other metals to pure gold while making jewelry, the purpose is to increase its strength and hardness, this kind of alloy is called K gold.
Through this method, K gold can achieve nobility as pure gold, and it can also provide pure gold gap, on the other hand, K gold can be made into various colors according to different needs. In international fashion jewelry, you can see different kinds of colors, but the most common color is yellow and white. K gold can be divided into colored gold alloy and white gold alloy by different colors. In the jewelry industry, what is widely used is Au-Ag-Cu (Zn) alloy, white gold is mainly Au-Ag-Ni (Cu, Zn) alloy and Au-Ag-PD alloy ( Zn, Cu). When gold is mixed with 25% palladium, nickel or zinc, it turns white and its main component is still gold, this type of alloy is called K white gold.