Platinum, or white K (yellow) gold, is a gray-white metal, which is made by melting the main component gold with a small amount of nickel, silver, copper, zinc, palladium and other metals. Many consumers mistakenly believe that platinum is platinum. Identification method of platinum: marking: platinum ornaments are printed according to their gold content. For example: 18K, G750, 750, etc. Color: Theoretically, the color of high-quality platinum is equal to that of pure platinum. However, the platinum jewelry sold in the market has poor smelting and bleaching process and low whiteness due to improper formula. In order to make the surface of K-gold jewelry shine, rhodium is plated on the surface to make it easy to wear, revealing the yellowish gold essence inside. So the platinum ring will crack!