The proportion and classification of gold content in K gold jewelry are as follows:
Proportion of gold content
K gold is an alloy formed by melting gold with other metals. Pure gold is divided into 24 parts, with each K containing approximately 4.166% gold. Specifically:
9K gold: The gold content is approximately 37.49% to 37.5%.
10K gold: The gold content is approximately 41.66% to 41.7%.
12K gold: The gold content is approximately 49.99%.
14K gold: The gold content is approximately 58.32% to 58.33%.
18K gold: The gold content is approximately 74.998% to 75%.
20K gold: The gold content is approximately 83.32%.
21K gold: The gold content is approximately 87.48%.
22K gold: The gold content is approximately 91.6% to 91.65%.
24K gold: Theoretically, it has a gold content of 100%. In reality, if it exceeds 99.6%, it is considered top-grade and is often regarded as pure gold.
Classification
Classified by gold content:
Low-k gold: such as 9K, 10K, and 12K gold, has a relatively low gold content, high hardness, and a relatively affordable price. It is suitable for making jewelry for daily wear.
Medium K gold: such as 14K gold, with a moderate gold content, it has a certain degree of golden color and firmness. Although it is not mainstream, it also has its unique charm.
High-k gold, such as 18K, 20K, 21K and 22K gold, has a relatively high gold content, a darker color and a solid texture, making it suitable for making high-end jewelry. Among them, 18K gold is a relatively common category of K gold. It has good strength and wear resistance, and also has a relatively high gold content. It is widely used in jewelry making.
Classified by color:
Yellow K gold: It retains the yellow color of gold. The depth of the yellow varies with the different gold content.
White K gold: By adding metals such as palladium and nickel to gold, it gives a white appearance and is easily confused with platinum. However, its main component is still gold, and its price is lower than that of platinum and gold.
Rose gold K gold: By adding a certain proportion of copper to gold, it presents a romantic pink color and is also known as rose gold.