Real platinum jewelry is made of metal platinum. Metallic platinum, also known as platinum, has a chemical symbol of Pt, with a specific gravity of 2 1.45 and a Mohs hardness of 4.3. Compared with platinum and gold and silver in the same volume, platinum is the heaviest and hardest. Platinum is a more valuable metal material than gold because of its small natural reserves, difficult mining and stable chemical properties. Platinum jewelry is delicate, slightly hard, not easy to wear, light gray in color, elegant in color, bright and lasting in luster, and not black after long use. There are stamps on real platinum jewelry, which is the main symbol. Hot stamping mainly includes the following contents: first, the texture of jewelry, there are two kinds of texture descriptions on platinum jewelry, some are English Pt and some are Chinese "Platinum"; The second is the composition of jewelry. If there is "99" on the platinum jewelry, it means that the platinum content is 99%; Third, the origin of jewelry, jewelry manufacturers everywhere have their own unique seals. These seals, like the trademarks of other industrial products, are essential for the first jewelry, and counterfeiting is absolutely not allowed, because it is not only a symbol of producers, but also a symbol of consumers. It is mainly stainless steel or silver jewelry that is easily confused with real platinum jewelry. Stainless steel jewelry is similar to platinum jewelry in the new era, with gray color and bright luster. However, its white color is gray-black, bright and false, not durable and easy to wear. Silver jewelry is soft and easy to wear; Light in weight, silvery white in color, whiter than platinum, and easy to turn black when used for a long time. In addition, from the seal point of view, stainless steel jewelry has no seal or the seal is vague, and the seal of silver jewelry is different from that of platinum jewelry. Body color identification method: the density of platinum is greater than that of gold, so it is easy to distinguish platinum from gold and other metals by weight. High-quality platinum jewelry has a blue-white surface and a soft luster. Mercury identification method: apply mercury to the jewelry so that it cannot be attached to the real platinum. Distinguish the truth with fire: burn the ornaments red with alcohol lamp. After cooling, the black component accounts for about 70%, the gray component accounts for about 90%, the platinum component with the same color accounts for more than 95%, and the black component is a fake. The English translation of Platinum component logo platinum is Platinum, abbreviated as Pt or Plat, Pm. Platinum is mainly represented by Pt in jewelry industry. At present, the most common platinum ornaments on the market are Pt900 and Pt700, that is, the platinum content is 90% and 75%. General manufacturers will make obvious marks on jewelry. To the naked eye, platinum is whiter, and silver is gray, especially when it is preserved for a long time. With different densities, platinum is heavier and silver is lighter.