What is the difference between platinum

As a well-known precious metal, platinum's financial properties are increasingly showing its huge potential in the international and domestic financial markets, especially in the Chinese domestic market. So what is the difference between platinum? As a well-known precious metal, platinum's financial properties are increasingly showing its huge potential in the international and domestic financial markets, especially in the Chinese domestic market. So what is the difference between platinum? 1. Identification of seals: Jewelry products must be marked with seals and their purity in accordance with national standards. If the jewelry has the words'pt' or'platnum' or'plat', it is platinum, and if the jewelry has the words's' or'silver', it is silver. 2. Comparison of appearance and hardness: Platinum will be slightly grayish bright white when observed with the naked eye. It is hard to scratch with a pin. Its Mohs hardness is 4.3. Silver has a white color and a smooth and delicate texture. Oxidation will turn into off-white or jet black. Its Mohs hardness is 2.7, which is much softer than platinum. 3. Firing method: Platinum can resist high temperature oxidation, its melting point is as high as 1770 篊, it will not melt when it is fired at high temperature (gasoline). After cooling, the color will not change or there will be traces of quenching. Silver has a low melting point. After being fired at a high temperature, its color is red, black, red or jet black depending on the amount of silver. 4. Weighing: Platinum has a specific gravity of 21.4 and silver has a specific gravity of 10.49. The same volume of platinum is twice as heavy as silver. Generally, the two can be distinguished by weighing it by hand. 5. Chemical method: The chemical properties of platinum are extremely stable and corrosion-resistant. It will not react with any acid or alkali, while silver is not resistant to strong acid corrosion. What is the difference between platinum? Platinum is a precious metal equivalent to gold and silver. It is widely used in industrial fields, especially the automotive industry, accounting for almost 50% of platinum industrial consumption. Previous: How to distinguish the purity of platinum Next: How much is an engagement ring?