18K gold is a gold alloy containing 75% gold. For example, if you buy 10g 18K jewelry, the gold content is 7.5g.
Why should we reduce the proportion of gold? What is the role of adding other metals?
Function 1: Improve hardness. The hardness of gold is very soft, so everyone often sees people on the film and television biting gold with teeth to confirm the purity. Gold can not be directly used to set diamonds, gems, easy to deform, and diamonds are easy to fall off. The hardness, plasticity and casting properties of 18K gold are very good, firm and not rocky.
Function 2: Change color. The color of gold is golden yellow. By adding different metals, the industry term is called "filling mouth", which can be adjusted to white, K yellow, rose gold, and the color is more abundant, which is more suitable for modern people's aesthetics of jewelry.
Function 3: Rich in style. K gold's processing performance is very good, many complex jewelry styles can only be done with K gold, while gold cannot be used to make complex shapes.
18K gold is usually coated with a layer to prevent oxidation. And this oxidation, not referring to the oxidation of gold, is the oxidation of other metals that are added to the gold in the K gold. After the coating wears off, the overall color of K gold does not change, but it will be slightly dark and smeared, not as bright as when you just bought it, which is the reason for the "filling mouth" of oxidation.
ORDRM® offers large selection of fashion jewelry included stud earrings, hoop earrings, tassel earrings, charger bracelet, leather bracelets, etc.