Refers to the depth of light energy passing through the jadeite original stone. When the light is projected on the surface of the jadeite original stone, part of the light will be reflected from the surface and part of the light will be transmitted from the inside of the jadeite original stone. However, the original jadeite stone has different particle thickness, crystal morphology and bonding mode, and its light transmission ability is also different. The more light the original jadeite stone can transmit, the better the transparency. The original jadeite original Yue Shi is crystal clear and has the feeling of "green water is about to drip". On the contrary, the transparency of jadeite is even worse.
2. texture.
Commonly known as "species", "base" and "soil", it refers to the structure of jadeite original stone and is an important index to measure the quality of jadeite original stone. Because jadeite is a collection of various minerals, its structure is mostly fibrous and granular. The finer the better, the less stone flowers, spots and cracks the better. The fineness and roughness of jadeite raw stone are determined by the size of crystal grains, and small crystal grains make the texture delicate and transparent to translucent. On the contrary, the texture is rough and opaque.
3. hey
Refers to some impurity minerals contained in jadeite original stone, which can be summarized as cotton, grain, wrinkle and crack. Cotton is the internal feature of jadeite original stone, which exists in small particles, rings or living clouds. Serious white cotton turns into stone flower, which affects the beauty of jadeite original stone. Grain is also the inherent feature of jadeite original stone, which is caused by the difference of color or structure of jadeite original stone, such as banded stone grain. String is the internal feature of jadeite original stone. There are two main formation mechanisms: the first is that jadeite is composed of different grains, and when the grains are coarse, it is easy to produce large grain gaps and flash effects under the irradiation of light; The second is the cracks caused by crustal movement after the formation of jadeite original stone. Due to the infiltration of hot melt materials such as magma, cracks are repaired and fine healing cracks are formed. This is a very fine crack, which can be seen and felt. Cracking is a serious flaw in the original jadeite stone, and it is a fracture surface caused by natural or man-made external forces. The existence of defects will affect the value of jadeite original stone to some extent. .
4. clarity
Refers to the degree of internal defects of jadeite original stone. There are two main kinds of defects in jadeite original stone: white and black. Black defects, some of which appear as dots, are called black spots, and some become filiform and banded, which are called black silk and black belt. Mainly black minerals, mostly hornblende, and black spots mostly appear in the dark jadeite original stone. White defects, mainly granular and massive, are generally called stone flowers and blisters, mainly albite minerals or aggregates. Defects have a great influence on the quality evaluation of high-grade gem-grade jadeite stone, while middle and low-grade jade carving materials can be made into exquisite jade carving crafts according to clever color arrangement. The existence of cracks has a great influence on the quality of jadeite stone. Cracks in jadeite raw stone include cracks caused by external force and intergranular cracks. The former has a great influence on the quality of jadeite raw stone, while the latter has a general influence on the quality of jadeite raw stone, but the quality of jadeite raw stone will be poor.
5. color.
The original jadeite stone is very rich in color. Usually people call the red color of jadeite original stone "Fei" and the green color "Cui". Rich green, bright red and violet are loved by people, among which green is the most precious. Jewelry circles often judge the green color of jadeite original stone according to ten words: "strong, yang, savage, positive, harmonious" and "light, yin, old, evil and flower". "thick", that is, green is full, vigorous but not black; On the contrary, light green and weak color are "light". "Yang", that is, green is bright, bright and generous; On the other hand, if the green is dark and dull, it is "yin". "Qiao", that is, green is even and soft, which can be coordinated with "bottom" and "water"; On the other hand, if the green is unevenly distributed in spots, peaks and blocks, it is "old". "Positive", that is, green is pure, and there are no blue, blue and other variegated colors in green; On the contrary, it is "evil". "Harmony", that is, green is uniform, harmonious, non-flowered and non-chaotic; On the contrary, it is "flower".