What is the material of gold?

Divided into k gold and pure gold. Gold is generally divided into 9K, 14K, 18K, 22K and 24K. Theoretically, 24K represents 100% pure gold, but in practice, more than 99.9% can be called 24K gold.

Gold is graded according to its gold content.

K-Jin: K-Jin's "K" is the compilation of the foreign word "Karat". The complete statement is as follows: opening gold means gold. The measurement method of K gold is: pure gold is 24K, which means 100% gold. K gold is hard in texture and low in purity because of the addition of silver, copper, zinc and other metals to gold. Theoretically, the gold content of 24K should be 100%, but gold is not barefoot, so 24K gold does not exist and does not meet the national standards. Common in the market is 18K gold with a gold content of 75.0%.

Pure gold: pure gold with a gold content of not less than 99% is dark yellow, commonly known as two 9s. Pure gold is dark yellow in color, soft in texture and high in purity. Thousands of pure gold means that the gold content of gold jewelry is above 99.9%, because its highest gold content can reach 99.9%. Pure gold, with a gold content of 99%, commonly known as two 9s, is a little lower than thousands of pure gold.