Rain flower stone is a natural agate stone, also known as aragonite, ornamental stone and lucky stone. Mainly produced in Liuhe District of Nanjing and yuetang town area of Yizheng City, it is a famous specialty of Nanjing and Yizheng. China Since the Southern and Northern Dynasties, literati have always been attached to mountains and rivers, proud of the haze, and reached its peak in the Tang and Song Dynasties. There are countless anecdotes about stone appreciation in the history of Ya, and the magical rain flower stone has become a treasure in the stone, known as the "queen in the stone" and "a national treasure from heaven, a must in China".