There are eight conditions or standards for good jadeite, namely: ① green should be positive, not blue; ② Green should be evenly distributed; 3 water is better; ④ Less impurities; ⑤ "Grow old; ⑦ The green color of jadeite is more than 5 carats; ⑧ Work should have cultural connotation, exquisite and novel. In addition to the above conditions, a good jadeite raw material must also have a massive positive green as the standard torus. What element is responsible for the green color of jadeite? The green color of jadeite is mainly caused by chromium trioxide. Besides the most valuable green, jadeite also produces blue, yellow-green, blue-green, purple, red, yellow, black and other colors. Their chromogenic elements are mostly iron, manganese, vanadium and iron. However, these color-developing elements are harmful to the green color produced by chromium and have a blue-to-gray effect on the green tone. What color jade is the best? In terms of color, the best colors of jadeite are emerald, emerald green, apple green and yellow seedling green. Below are blue-green, purple-purple, crimson, yellow-green, yellow, blue, gray-blue and so on. Four or five colors of jade ornaments are called multicolored jade, which is also rare. However, this color must be combined with the green color of jadeite and good water seed material, and it must be less cracked with impurities to be valuable. What are the factors that affect emerald green? First of all, the factor that affects green is transparency, which is water quality. Good transparency can set off the beauty and brightness of jadeite, which is of high value. In addition, impurities such as iron, buttons, iron and kiln elements will make jadeite blue, make the bottom gray or even black, which will affect the value. Furthermore, the existence of albite, amphibole, zeolite, nepheline, chromite and iron oxide can produce white cotton, black spots and black lumps in jadeite, which are also harmful minerals. The more uniform and pure the green color of jadeite, the higher the content of magnesium and calcium in jadeite. High-quality jade is created by various geological dynamic actions and hydrothermal activities. What are the gems with the same color as jade? There are many gems with the same color as jadeite, but their green tones are obviously different and can be recognized by the naked eye. In addition, their physical and optical properties, such as specific gravity, hardness and refractive index absorption spectrum, are quite different and easy to identify. There are the following varieties: emerald, garnet (calcium iron garnet), beryl (green variety in aquamarine), tanzanite (zoisite), hydrogrossular, prehnite, Fushan stone (California stone), green lead stone, green crystal, green sphene, green tourmaline, olivine and Tianhe stone (feldspar). What is the 36-water 72-bean (green) 108 blue of jadeite? Mr. Zhou refers to 36 water, 72 beans (green) and 108 blue of jadeite, which is used to indicate that the color changes of underwater species are very complicated and diverse, and it is difficult to identify them. It is not that the 36 water, 72 beans (green) and 108 blue of jadeite are divided one by one for our identification. In fact, this is the gang language of gangs such as "Heaven and Earth Club" and "Red Gang" in the Ming and Qing Dynasties. It is used to compare the water color seed material of jadeite, which shows the complexity of jadeite quality change. Because thirty-six days and seventy-two demons make up one hundred and eight worlds. That's all. If people must study the thirty-six waters, seventy-two beans and one hundred and eight blues of jadeite, they will get into the corner and accomplish nothing.