Burmese jade, also called jadeite, is very good. Its characteristics are as follows: jade is the crown of jade and the most precious variety of jade. The original meaning of "flying" refers to a bird with red feathers, and "Cui" refers to a bird with green feathers. Because of its bright color and similar color to jade, "jade" is used to represent this kind of jade. Emerald is mainly produced in Myanmar and is also known as "Burmese jade". The value of jadeite mainly depends on color, transparency, texture, land, variety, flaws, cracks, technology and so on. The following is an explanation: A. The common colors of jadeite are green, white, red and purple, among which green is the best variety. If a piece of jade has green, red and purple at the same time, it is also a very rare jade. Because green has the most important commercial value in color, this paper mainly introduces green: generally speaking, the commercial green of jadeite emphasizes "strength, positivity and harmony", that is, green is full and thick; "Positive" means green and pure, with no noise; "Yang" means that green is bright and bright; "Harmony" means green is even and soft. According to the color tone, it can be divided into the following categories: 1, emerald: green, bright, pure, saturated, without any color cast, evenly distributed, and delicate in texture, among which emerald is more saturated than emerald and is the best among jadeites. 2, Apple Green, Mabel Miao: The color is a little yellow in dark green, almost invisible, and the color saturation is slightly lower than the top, which is also a rare product in jade. 3, boxwood green: green and bright, slightly yellow, like boxwood leaves in early spring. 4, onion heart green: green like a delicate onion heart, slightly yellow. 5. Parrot Green: Green is as bright as the parrot's green feathers, slightly transparent or opaque. 6, bean green, bean green: green, such as bean color, is a common variety, jade is slightly thicker and slightly transparent, and those with cyan are "bean green". 7, blue water green: transparent to translucent, slightly blue in green, delicate jade, but also high-grade jade. 8, spinach green: translucent, green with blue-gray tone, like the green of spinach. 9, melon skin green: translucent-opaque, uneven green, and green contains cyan tone. 10, blue-green: blue tone is obvious, and green is dark. 1 1, dark green: translucent-opaque, with strong color, bluish black and pure texture, it is the best among jadeites. 12, turquoise: good transparency, dark green, blue-gray tone, low-grade varieties. 13, toad green: translucent-opaque, blue and grayish black tones. 14, grayish green: poor transparency, grayish green with even distribution. According to the strength of green, it is divided into: 1, brilliant green: transparent-translucent, pure green, uniform and bright, belonging to rare varieties. 2. Yang Qiaolv: Green is bright, delicate and pure. 3, light sun green: slightly transparent-translucent, green light bright and pure. 4. Shallow water green: green is light and uniform, with good transparency. B. Transparency is an important factor in jadeite evaluation. Commonly known as "water head" in the industry, the high transparency is the water head foot. This kind of jadeite looks crystal clear, giving people a watery feeling, while the jadeite with poor transparency is dry and dull, giving people a dry feeling, that is, poor water head and insufficient water. Don't use spotlight flashlight to observe the transparency of jadeite, but use the depth of light to measure the length of water head, such as 3mm deep for water diversion, 6mm deep for water diversion and 9mm deep for water diversion. The transparency of jadeite can be roughly divided into transparent, relatively transparent, translucent, slightly transparent and opaque. The more transparent jadeite is, the higher its value is. C, texture refers to the structure of jade, and some materials refer to the foundation and ground. Because jadeite is a collection of various minerals, its structure is mostly fibrous and granular. The fineness and roughness of jadeite texture are determined by the grain size. If the grain size is large, the texture will be rough and translucent to opaque; if the grain size is small, the texture will be fine and transparent to translucent. According to the particle size, the texture can be divided into dense grade, fine grade, medium grade and rough grade. Jade has reached a dense level, with almost no particles and high transparency. D the part of Di Zi jade other than green is called Di Zi, also called "bottom". Di Zi reflects the background color and structure of jadeite, and also reflects the cleanliness and transparency of jadeite. According to its color, transparency and structure, it can be divided into the following categories: 1, glass bottom: bright and transparent like glass, which is an extremely high-grade variety of jadeite; 2, the bottom of the ice: clear and transparent, crystal clear as ice, giving people a feeling of ice and jade, and also a high-end foundation in jade; 3, egg white bottom: as transparent as raw egg white, jade is delicate and moist; 4, hibiscus bottom: jade is delicate, transparent, granular but can not see the boundaries of particles; 5, the bottom of the nose: like the nose, the transparency is slightly worse, not bright enough; 6. Green bottom: transparent, slightly blue-green; 7. Gray background: more transparent, with a slight gray tone; 8. Muddy water bottom: translucent and unclear; 9, lotus root powder bottom: translucent, like lotus root powder, slightly pink or purple; 10, fine white background: translucent, jade pendant, white background; 1 1, white sand bottom: translucent, white and sandy; 12, gray sand bottom: translucent, gray and sandy; 13, white flower bottom: slightly transparent, white and thick, with stone flowers; 14, porcelain bottom: slightly transparent, like white porcelain, grayish white; 15, taro bottom: opaque, such as cooked taro, gray; 16, dry white background: opaque, poor gloss; 17, bean bottom: opaque, with coarse particles and obvious emerald; 18, horse tooth bottom: opaque, like horse teeth, rough texture, white background; 19, incense ash bottom: opaque, like incense ash in color and rough in texture; 20, lime bottom: opaque, color like lime; 2 1, Gan Qing base: opaque, with thick stone flowers and rough texture; 22, the bottom of the stool: opaque, rough texture, dirty bottom, common black-brown or yellow-brown, like shit. E. The types of jadeite refer to the greenness and transparency of jadeite, as well as the structural thickness and transparency of jadeite. Variety is an important index to evaluate the quality of jadeite, which is as important as color. Therefore, there is a saying that "laymen look at colors and experts look at varieties". When choosing jadeite, I am afraid that there will be no color and no variety. This statement is not that green is not important, but that only green jade gives people a dry feeling and lacks a spirituality. Therefore, a kind of jadeite can not only make the jadeite with light color look moist and crystal clear, but also make it even and full. Traditionally, jadeite varieties are divided into old pit species and new pit species. The so-called old pit species refers to jadeite with pure green, uniform distribution, fine texture and good transparency, while the new pit species refers to jadeite with poor transparency and rough jade. At present, the classification method can divide the jadeite into the following categories: 1, and the old pit species: it refers to the dark green color, uniform distribution and delicate texture. If it is a glass bottom, it can be called the old pit glass species, which is the best in jade; 2, ice species: crystal clear, ice bottom, colorless, so the head is excellent, belonging to high-end varieties; 3. hibiscus flower species: light green, fine jade, good water head, belonging to middle and high-grade varieties; 4, golden seeds: uneven green, filiform and intermittent, good head and good bottom; 5. Gan Qing species: green is thick and pure, but the head is poor, the bottom is dry and the jade is thick; 6. Flower-green species: the green is unevenly distributed, and it is veined or spotted, belonging to middle and low-grade varieties; 7. Bean species: jade is rough, opaque and rough, and the green color is called bean green, which is a low-grade variety; 8. Oil-green species: jade is delicate, with good transparency, shiny surface, dark green and impure color; 9, horse tooth species: rough texture, poor transparency, white particles. Defects in jadeite refer to some impurity minerals, and their colors and shapes have an uncoordinated inspection effect on the whole. Often, the whole jadeite raw material or finished product is mixed with some spotted black and tan mineral particles and silky and foggy white stone flowers. The existence of these defects will affect the value of jadeite, especially for high-grade jadeite. G. Cracking refers to cracks, including primary cracks, secondary cracks and processing cracks. It has a great influence on the durability of jade, so it will greatly affect the value of jade, especially when buying. H. Craft is also an important factor that can't be ignored in evaluating the value of jadeite, especially the carving craft, which should not only pay attention to the good meaning, but also pay attention to the beautiful color. In addition, it also requires exquisite knife work, beautiful shape and smooth lines. A good piece of jade, combined with a good craft, is like icing on the cake, and its value will be greatly improved.