18K gold is the same as Au750. In fact, 18K gold and au750 gold are different names of the same thing, both of which contain 75% gold and rare metals. They are mixed metals for jewelry inlay made by special technology, which can appear white, yellow, rose gold and other colors.

18k gold is an alloy with a gold content of at least 75%, that is, an alloy with a gold content of 18/24, and the remaining 25% is other precious metals, including platinum, nickel, silver and palladium. 18K gold is a kind of gold ornament with low cost and comfortable wearing.

Au750 refers to an alloy consisting of 75% gold and 25% other metal replicas, commonly known as 18K gold. Because 25% of AU750 is made of other metals, it can be made into different colors, such as white, light yellow and pink.

The opening of gold (K) is the unit of gold content:

The most common types of K gold are 24K, 18K, 14K, 8K and so on. In theory, 100% gold can be called 24K gold, but in reality, it is impossible to have 100% gold, so the content in China is above 99.6% (including 99.6%).

18K gold ornament not only has the precious value of gold, but also has the advantages of strong ductility, high hardness and changeable colors due to its perfect composition ratio. When used in jewelry design, it can give full play to the complex and exquisite creative expression.

Because it contains 25% other metals, 18K gold can also be made into different colors, such as white, yellow and rose red, which are called white 18K gold, 18K rose gold respectively. K-gold is the mainstream in the world jewelry trend, and western fashionistas show their personal style by wearing unique and distinctive K-gold jewelry. Just because K-gold fashion can always meet the needs of contemporary young people, it has been enduring in the fashion world, forming a popular trend of wearing K-gold jewelry.