Not purple gold, not pure gold. Zijin Gold is an alloy made of gold mixed with other metals (such as copper, indium, lead, etc.). ), usually containing about 50% gold, its color changes alternately between purple and light yellow due to the existence of other metals in the alloy. Although the gold content of Zijin Gold has reached a certain standard, its purity is still lower than that of pure gold (24K gold, that is, the gold content is 99% and 99%). Zijin is the national gold of Russia. Zijin, platinum and gold are also called the three major gold in the world, and they are a kind of natural gold. Its main component is rhodium, also known as rhodium gold. Because of its high hardness, strong oxidation resistance, color fastness and beautiful wearing, many jewelry designers choose Zijin to make jewelry.