The luminous pearl was also called "luminous jade", "luminous stone" and "luminous stone" in ancient China. It is said to be a rare treasure in the world that can emit strong light at night. Joseph Needham, a famous British scholar, recorded in his magnum opus "History of Science and Technology in China" that ancient China people loved the Syrian-made luminous pearl, nicknamed "Peacock Warm Jade". It is said that some people in India call the Night Pearl "Snake Eye Stone". According to the gemological records compiled by Japanese gemologists Ling Mumin 19 16, the Japanese night pearl is a special red crystal, which is known as the "sacred gem".
1900, the "Eight-Nation Alliance" pieced together by eight imperialist countries, namely Britain, France, Japan, Russia, Germany, the United States, Italy and Austria, invaded Beijing from Tianjin. Empress Dowager Cixi fled from Beijing to xi 'an with Emperor Guangxu, announced the policy of "measuring China's material resources and gaining the favor of the country" and signed a "humiliating treaty" with the invaders. It is said that Empress Dowager Cixi tried to please the invaders. Send a little maid-in-waiting with four precious luminous pearls as souvenirs for the invaders. This little maid-in-waiting is very patriotic and unwilling to give her treasures to foreign invaders. She is very angry and treasures her wealth among people. At that time, no one knew her whereabouts, which became a major unsolved case in modern times.
Decades later, four pearls were found in Xi 'an, which were verified by Comrade Guo Moruo. These are the four luminous pearls that Empress Dowager Cixi has treasured for decades. According to the news published in the newspaper, put these four night pearls in the drawer. "If you don't turn on the light at night, you will see dazzling white light all over the room when you pull the drawer."
Rare things are expensive. The night pearl was originally collected from ore, but its distribution on the earth is extremely rare and it is very difficult to mine, so it is particularly precious. Some ancient books describe it as "side color"; The color of the front view is white. It is said that in ancient Greece and Rome, some emperors inlaid it in palaces or wore it in crowns, and some queens and princesses decorated it in jewelry or put it in their bedrooms to promote and praise it as a national treasure.
What kind of treasure is the night pearl? Ancient and modern Chinese and foreign statements are quite inconsistent. According to some experts' research, the night pearl is not as mysterious as some people boast, but several special minerals or rocks, which have been processed by people before they become round beads. The light of the night pearl did not make the Dragon Palace as bright as day as the myth said. In the dark, people can see the printed matter clearly at a place half a foot away from the luminous night pearl.
Why does the night pearl give off strong and beautiful light at night? There are different opinions about this. Some gemologists believe that hydrocarbons are mixed in diamonds because arsenic sulfide is mixed in the fluorite composition of the night pearl. During the day, these two substances can emit "enhancement", and then release energy at night, which becomes beautiful luminous, and can continue to shine for a certain period of time, even permanently. The above are only the opinions of some experts, which are not necessarily comprehensive and accurate.
There are still many mysteries about the night pearl, which experts don't understand so far. It is said that there is a crystal luminous pearl that can emit "flame"-like luminous, but what is the luminous substance inside? It's not clear yet. In short, the night pearl is still an eternal mystery that has not been completely uncovered.