The radioactivity of jade is 3-5R (the safety standard is 40R).

Jewelry is radioactive for two reasons:

1, the gem grows with the radioactive material nearby in the long crust process; People shine some precious stones to get beautiful colors. However, the gems we are mining now have undergone crustal changes for hundreds of millions of years, and their radioactivity has already decayed and is no longer harmful.

2. In the case of artificial irradiation, regular manufacturers can do this operation. After irradiation, they will stand for a period of time and then be sold in the market. The radiation of this gem is no longer harmful to human body.

Extended data:

Health care function of jade

According to Compendium of Materia Medica, "Jade pieces are made of jade. The smell is sweet and non-toxic. It is said that jade is the most abundant substance in human body. Indications for removing stomach heat, dyspnea, thirst quenching, beans and other debris. If you take it for a long time, you will be healthy for many years.

It can moisten the heart and lungs, help the voice moisten the throat and nourish the hair. Nourish the five internal organs and stop fidgety. Gold, silver and Ophiopogon japonicus are beneficial to decoction. "This shows that jade was not only used for viewing in ancient times, but also played a very good role in medical care.

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