Which is more expensive, platinum or platinum?

Platinum is platinum. Platinum is a synthetic metal, generally 75% gold +25% other metals, called 18K platinum; Platinum is a natural precious metal. 2. Symbol imprint Internationally, every precious metal has a corresponding symbol. Among them, the K platinum mark is generally "18K" or "750" or "au750"; Platinum is marked as "pt" or directly represented by the Chinese character "Platinum". 3. Metal characteristics K Platinum has a high hardness, which is suitable for setting gems without worrying about falling off, while platinum has a relatively soft hardness and may be scratched when it touches hard objects; Platinum has many colors, such as K platinum, rose gold and K gold. There is only one kind of white platinum. The properties of platinum are also very stable, and it will not change color when it comes into contact with chemicals, while the properties of K gold are more active. In order to avoid surface discoloration, contact with chemicals is not recommended. 4. Price is not price, and the difference between K gold and platinum is obvious. Platinum is usually more expensive than K gold. For example, the price of 18k platinum today is about 309 yuan/gram; The price of platinum is about 36 1 yuan/gram.