Sapphire transformed from forest is "forest" and "forest stone", commonly known as "tree jade", "wood to stone" and "silicified wood". "Yu Shuhua" is called the best in silicified wood by geology, and it is an ancient treasure dedicated by nature to human beings. It is dazzling, mysterious and valuable. Yu Shuhua was born in Mesozoic 250 million years ago. At that time, the forest in Hengduan mountain area was lush, and after repeated intense orogeny, the forest was buried deep underground. Under the change of geological conditions such as rock and soil, pressure, temperature and humidity, the organic matter in trees is gradually replaced by elements such as silicon, calcium and iron after long-term immersion in groundwater with high concentration of silica (sio2 _ 2) solution. Because of its special cause, "Yu Shuhua" has a hardness above 7 and can be circulated for a long time. Its original stone maintains most biological characteristics of trees, such as appearance, skin marks, tree nodes, annual rings and wormholes. After preliminary washing and grinding, it presents a different jade texture, which is glazed when touched and greasy when moistened, creating a meaningful world. Yu Shuhua is of great aesthetic value. The beauty of "tree-shaped jade" is that it looks like wood rather than wood, like jade rather than jade; Its colors are colorful and colorful; Its high-quality glass is colorful, warm and greasy; Its nature is generous, tenacious and simple. "Tree-shaped jade" is monochromatic, multicolored and colorful because of the different trace elements and silicified forms contained in the rock environment. The purity of monochrome is slightly transparent, while multicolor is radiant, dazzling and giving people visual enjoyment. According to the study of rare jewelry and jade in Shuhuayu, those natural rare substances with certain hardness and decorative effect are jewelry and jade. "Shuhuayu" seems to have four elements of jewelry: natural, rare, hard and beautiful. The formation of "tree fossils" requires extremely harsh geological conditions. Only one in ten thousand paleontologists form fossils, and the probability of forming "tree jade" is even smaller. Because of its special and complicated achievements, Yu Shuhua has been transformed into various forms, either to see the piano standing leisurely, the mountain standing on the wall, or to see the fountains and waterfalls flowing, the tigers whistling and the dragons singing-with myriad images and strange shapes. There are all kinds of people, figures, animals, fish, insects, flowers and birds in Yu Shuhua, and some fine products can be similar to each other. At the same time, it is a kind of non-renewable resource because of its special causes and myriad changes, which makes it have extremely high historical value, scientific research value and ornamental value, making this prehistoric treasure even more rare. The aesthetic value of the beautiful rhyme of "Yu Shuhua" and "Yu Shuhua" is reflected by appreciating their "rhyme, quality, shape, grain and color". Because of its complicated causes and scarce stock, the economic value and collection value of Yu Shuhua are increasing day by day. As for the beauty of "Shuhua Jade", someone once wrote a poem named "Shuhua Jade Fu" in Qing Dynasty: the beautiful Shuhua Jade condensed the atmosphere of heaven and earth, and it gave birth to everything for prehistoric ancient trees. There are hundreds of millions of years of silicon liquid, and the goddess fills the sky and Meiyu Jingwei once filled the sea. There are many kinds of things tangled in it, either as hard as gold or as moist as sheep fat. Coral is red and green as jade, blue and misty, three kinds of autumn colors, waves and eternal traces. Ancient wood hides its face, revealing thousands of stones. Wan Li's small and exquisite hall of peaks and peaks shines for officials, but its business is booming, simple and quiet. There are thousands of images of Qian Qian in the new day and night, and there is a wandering road that can be passed down to later generations. The beauty of "Yu Shuhua" lies in its charm, texture, shape, grain and color. If we can give a beautiful "Yu Shuhua" a proper title, then this "Yu Shuhua" is worth a hundred times. (Qing Dynasty) Ruan Yuan once said in Preface to Stone Painting: "Strange stones are silent poems and immortal paintings. Although the famous stone is clever, if it is untitled, it has not been broken. " This shows the importance of the topic. It has long been recorded in the Classic of Materia Medica and Compendium of Materia Medica of Shennong in ancient China that jade has the functions of "removing middle heat, relieving annoyance, moistening the heart and lungs, helping to relieve sore throat, nourishing hair, dredging blood vessels and brightening eyes and ears", and "Yu Shuhua" also has the above beneficial health care functions. "Yu Shuhua" has the extraordinary spirituality of "the return of everything in the world". The Book of Rites says: "Soul and God belong to heaven, and shape and God belong to it", and "tree-shaped jade" is made of "gathering the aura of heaven and earth and transforming the brilliance of the sun and the moon", which has been favored by dignitaries and literati in past dynasties. The dignitaries regard it as an "auspicious treasure" because of its unusual spirituality of "gathering the spirit of heaven and earth". They think that Lin Shi is a thing in the shape of heaven and earth, which has the function of exorcising evil spirits and killing monsters. It has always been regarded as the treasure of Zhenguan Town Store by dignitaries in past dynasties. There is a saying that "the official is not prosperous without trees and jade, and the store has Jishiwang."