Gold is soft, hard because Cocktail Glass with Cherry Charm with all sorts of elegant design, produce especially when pearl inlaid with jade, gem curiosa of such as easily when was lost. Therefore, in the gold to add a small amount of silver, copper, zinc and links of london gingerbread man charm other metal to increase gold strength and toughness, made of gold, so called K gold. K gold can be made into all kinds of color according to need, in the international fashion K gold jewelry all sorts of color, common links of london sugar cane ring with yellow and white. With 25% of the gold of palladium or nickel, will be white, its component main ingredients or gold, this way of call white K gold. As the current technology level, also can't point out 100% of the purity of material. Therefore, gold products labeled the links of london earrings content of pure gold gold standard, the general is a K gold will be called 24 K gold, but it is the theory value for 100% of the gold, in fact, does not exist. So in the state standards, the businessman mark the links of london bracelets value of golden jewelry are allowed to use "24 K gold" is not standard standard method. Now that say for 24 K gold, that is the value of theory for 100%, the 1 K represents gold products contain pure gold links of london sale 1/24, about 4.16%. 18 K gold represent value for 18/24, namely contain pure gold, the rest of the 75% for other materials such as silver or copper. General gold jewelry all contain 1% of the other metals. For gold products tested value, national standards have very clear rules links of london that businessmen sales every gold decoration must indicate its value and weight listed. The weight of the gold decoration are the use of state legal unit of measurement. Its value should use "K gold" (not including 24 K links of london charm gold), "pure" (not less than 99%), contain Troy "thousands" pure gold (not less than 99.9%) of the regulation links of london jewellery of the standard unit