Platinum is better than Huang Jingui. Platinum is grayish white and easily confused with silver. Consumers should correctly identify platinum and silver when purchasing metal ornaments. The identification method is:

1? Look at this sign. If the words "Pt" or "Platnum" or "Plat" are printed on the jewelry, it is platinum; If there is an "s" or "silver", it is silver.

2? Weighing method. The specific gravity of platinum iron is 2 1.4, and that of silver is 10.49. Compared with the same volume of materials, the weight of platinum is almost twice that of silver.

3? Appearance comparison method. Platinum is gray and hard; And silver is white, delicate and smooth, softer than platinum.

4? Combustion method. After high temperature firing and cooling, the color of platinum remains unchanged, and it is still gray; Silver becomes moist red or black red.

5? Chemical identification method. Grinding platinum on the touchstone, dropping nitric acid and hydrochloric acid on the touchstone, and if there is a substance, it is platinum; Grind silver on the touchstone, drop a few drops of nitric acid and rinse with water. If this substance disappears, it is silver.