Platinum is rarer and more precious than precious metals such as gold and silver. Only a few places in the world, such as South Africa and Russia, produce platinum, and the annual output of platinum is only 5% of that of gold, so the price of platinum is generally more expensive. Platinum (pt for short) is a natural white precious metal. According to national regulations, only jewelry with platinum content exceeding 850% can be called platinum jewelry, and it must be marked with Pt. Platinum ornaments are usually marked with purity PT850, PT900, PT950 or PT990. Therefore, platinum jewelry is not as pure as 18K or 750 (that is, 750 thousandths). The price of platinum 999 is in line with the international market price and changes with the change. At present, the market price of Platinum 999 is about 332 yuan/gram, which will change at any time, while the market price of PT950 is about 3 15 yuan/gram, which will also fluctuate with the market. Only jewelry with platinum content above 850% can be called platinum jewelry. At present, the unit price of Platinum 950 is around 400 yuan, and the price of Platinum will change with the change of international platinum price, so the price of Platinum 999 will also change.