黑珍珠是一种贵重的珍珠。日本利用原子能制造黑珍珠是由于二种原因,一方面是由于普遍建造发电厂,产生了大量高温冷却水,造成了水体的热污染,使贝类育出的珍珠质量大大下降。因此,提出了用放射线照射来提高低品质珍珠的设想。另一个原因是目前珍珠的颜色主要是三种体系:白色系(包括 Black pearl is a precious pearl. Japan’s use of atomic energy to make black pearl is due to two reasons. On the one hand, due to the widespread construction of power plants, a large amount of high-temperature cooling water is generated, resulting in thermal pollution of water bodies and greatly reducing the quality of pearl raised by shellfish. Therefore, the idea of ​​raising low-quality pearls by radiation irradiation has been proposed. Another reason is that the current pearl color is mainly three kinds of systems: white line (including