Gold purity standard. "K" is the unit of gold purity, while "999" means that the content of gold has reached 99.9%. In other words, this kind of gold contains almost no impurities and is very pure. This kind of high-purity gold is often called "thousands of pure gold". Its texture is very soft and malleable, and it can be easily made into jewelry of various shapes and styles. Thousands of pure gold is very popular in the jewelry market because of its high purity and exquisite appearance, especially for those consumers who pursue high quality and elegant style. However, it is worth noting that thousands of gold are relatively expensive because of their high purity, and because of their soft texture, they may not be suitable for making some jewelry that needs to bear greater pressure, such as rings. Generally speaking, K Pure Gold 999 is a very pure and high-quality gold, and its unique charm and value make it popular in the jewelry market. Whether as an investment or as a gift, it is a very good choice.