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Rainflower stones are all kinds of gravel produced by Yuhuatai, which have been rounded by running water. The main components are hard rocks such as sandstone, quartzite, siliceous rock and igneous rock, as well as minerals such as quartz, chalcedony and opal. The former has no bright color; The chemical components of the latter, such as timely and chalcedony, are silica. Common colors are white, milky white and yellow. There are also red, purple, green, rose and black. There are also concentric, circular and spotted agates composed of stripes of different colors.
Some rare rain flower stones are magnificent, and the hazy transparency seems to contain mountains and rivers, clouds, flowers and birds, fish and insects, ghosts and gods, and the patterns are similar to those of Pig Bajie and the Monkey King, which are more praised by the world.
People often "raise" the rain flower stone in a basin and put it on the desk as an ornamental. Folk artists in Nanjing also cut the rain flower stones into various works of art, and nature and labor are integrated.
The story of Shi Yuhua.
Shi Yuhua's name comes from a myth and legend: In the 5th century, when Tian Liang was in prison, Master Guang Yun gave a lecture in Gao Tai, Lion Hill, south of Jinling, which touched God. Rain and dew gave flowers, and smallpox turned into colorful stones. This fairy tale has been handed down from generation to generation, so the stage was named Yuhuatai and the stone was named Shi Yuhua.
Now it is said that the red rain stone in Nanjing Yuhuatai is dyed by the blood of martyrs.