Lu 'an jade (Dabie Mountain jade, Huoshan jade) was collectively called yellow wax stone before it was called jade. The term "yellow wax stone" originally comes from the general name of yellow seasonal stone with strange or beautiful appearance, which contains a variety of stones and is not subdivided, emphasizing appearance and material is not the first factor. With the deepening of jade research, a large number of enthusiasts have found and found some fine stones with fine texture, high permeability and purity. It was identified as chalcedony by the authoritative department. The word chalcedony has existed since ancient times, which means the essence of jade (chalcedony is actually a general term for timely, and the aphanitic of SiO2 is a variant of timely). It is produced in the form of breast milk or stalactite, usually in the form of kidney, milk, grapes and so on. Waxy chalcedony is formed under the conditions of low temperature and low pressure, and appears in caves, hydrothermal veins, hot spring sediments, clastic sediments and weathered shells of extrusive rocks. Some chalcedony tuberculosis will contain water and bubbles, which is very interesting. Its physical properties are the same as those of the time. Chalcedony is regarded as a gem and is mainly used as a material for handicrafts. What is the value of chalcedony, market positioning, and the beauty of chalcedony is not lost to the best jadeite and Hetian jade. People who hold different opinions can be divided into several types: first, they have never seen the beauty and charm of good chalcedony, and they have seen too little good materials. Second, biased and slow to accept new things. Third, it is difficult to accept the new jade name (the name is just a code name, and the composition is not that important. Several consumers know the chemical composition of jadeite and diamonds. According to the ingredients, diamond, charcoal and pencil lead are one ingredient, and the key is to be beautiful, durable and rare. Third, jadeite, hetian jade and chalcedony are not physical comparison, but have many factors such as multidisciplinary research, physics, chemistry, optics, aesthetics, jewelry and jade science, history and culture, financial investment, psychology and so on. The value of a species involves many factors, which can never be decided by a discipline, a few experts or many consumers. Fourth, the price and value of a piece of Lu 'an jade can't just depend on the quality of this piece. Quality is one of the pricing factors; Another decisive factor is production, and good jobs are as hard to find as good materials; At the same time, there is the ratio of supply and demand of commodities and paper money: good jade is always scarce, resources are getting less and less, and more and more paper money is circulating. Supply is less than demand, and scarcity is more expensive.