What is the reason for the sudden discoloration of the bracelet?

1. Reasons for color change of jade bracelet: The color of jade bracelet is determined by trace mineral elements in jade, and the color of jade changes with the number of elements contained.

2. In fact, the bracelet will change color after being worn for a long time, probably because the bracelet is not natural, but a dyed bracelet dyed with amino dyes or polishing powder. The appearance of this dyed bracelet is dyed, which is not as stable as the natural bracelet, and the dyed bracelet is unstable inside, which is easy to fade and change color.

3. It is oxidized. Silver products are prone to oxidation, especially when exposed to hot water. Silver is pure enough to change color. May be wearing a bracelet in the shower, or when washing clothes, it will turn yellow when it is oxidized by sealed water.

The discoloration of silver bracelet may be caused by oxidation. When silver comes into contact with sulfur, it will generate sulfur oxide, and the surface of jewelry will turn black. With the increase of wearing time, some dirty things may be attached to the surface of the bracelet, which will also affect the luster of the bracelet.

5. The important reason for the discoloration of silver bracelets is that silver ions react with sulfur ions. As a result of the reaction, silver sulfide is produced on the surface of silver. Because silver sulfide is grayish black, with the increase of silver sulfide, the surface color of silver gradually changes from white to yellow, then to gray, and finally to black.

6. Why does the bracelet change color? 1 Why does the silver bracelet turn black? Improper wearing or storage of contaminated silver oxide jewelry, in a strong oxidizing environment, or contaminated by strong oxides, will lead to the surface oxidation of silverware.