Night Pearl Introduction: In the world, there are more than 20 kinds of minerals that can emit visible light when stimulated by external energy. The most representative one is fluorite with phosphorescence phenomenon. The highest quality fluorite phosphorescent beads shine brightly and never fade. This is the legendary "night pearl" in the world. In the 5,000-year history of Chinese civilization, the Luminous Pearl was once the most mysterious, rarest and most valuable treasure, and was collected by the royal family.