Regarding jadeite rough, many people say that they don't know how to look at its quality. So, how do we identify the quality and authenticity of the jadeite rough in order to harvest the real collectible jadeite rough?In fact, as long as you are familiar with the five characteristics of jadeite rough, you can do it.
Transparency: Refers to the depth at which light can pass through the jadeite rough. When light is cast onto the surface of the jadeite rough, some of the light will be reflected from the surface and some of the light will pass through the inside of the jadeite rough. The thickness of the particles that make up the jadeite rough is different, the crystal shape and the combination method are different, so the ability of light transmission is also different. The more light that the jadeite rough can transmit, the better its transparency, and the more crystal clear the jadeite rough will be"Emerald water"feelings. Conversely, the transparency of the jadeite rough is worse.
Base (texture):That is, colloquially"species", base, ground, refers to the structure of the jadeite rough, is an important indicator to measure the quality of the jadeite rough. Since jadeite rough is an aggregate of a variety of minerals, its structure is mostly fibrous structure and granular structure, the more delicate it looks, the better, and the fewer stone flowers, spots, and cracks, the better. The fineness and roughness of the texture of jadeite rough are determined by the size of the grains, and the small grains are delicate in texture, showing transparent to translucent;On the contrary, the texture is rough and opaque.
Imperfections:Refers to some impurity minerals contained in jadeite rough, which are summarized as cotton, grain, silk and crack. Cotton is the original internal feature of the jadeite rough, which exists in the form of small granules, rounds or live cloud flocculents, and the serious white cotton becomes a stone flower, which affects the beauty of the jadeite rough. The pattern is also the original internal feature of the jadeite rough, which is due to the local difference in color or structure of the jadeite rough, such as the color band stone pattern.
Locks are an acquired internal feature of jadeite rough. There are two main formation mechanisms: the first is that jadeite rough is composed of different crystal particles, and when the crystal particles are coarse, it is easy to produce a large particle gap, which produces a flash effect under the irradiation of light;The second is that the jadeite rough is squeezed and kneaded by the movement of the earth's crust after its formation, and the cracks are repaired due to the infiltration of hot melt materials such as magma, forming a subtle healing crack, which is a very subtle flaw that cannot be seen or touched. Crack is a more serious defect of jadeite rough, which is due to the fracture surface of jadeite rough by natural or man-made external forces. The existence of flaws will affect the value of jadeite rough to a certain extent.
Clarity: Refers to the degree of internal defects in the jadeite rough. There are two main types of imperfections in jadeite rough: white and black. Black blemishes, some appear in the form of dots, called black spots, and some become filamentous and band-like, called black silk and black bands, which are mainly a black mineral, with hornblende being the most, and black spots are mostly found in darker jadeite roughs. White blemishes, mainly granular and lumpy, commonly called"Stone flowers"，"Blisters"etc., mainly some albite minerals or aggregates.
The defects have a great impact on the quality evaluation of high-grade gem-quality jadeite rough, and the medium and low-grade jade carving materials can be made into exquisite jade carving handicrafts according to the clever color arrangement. The existence of cracks has a great impact on the quality of jadeite rough, and the cracks in jadeite rough include cracks caused by external force and cracks between crystals. The former has a great impact on the quality of jadeite rough, and the latter has a general impact on the quality of jadeite rough, but the quality of jadeite rough will be poor.
Color: Jadeite rough is very colorful. Often, people call the red color of jadeite rough"Fei", green is"Emerald"。Intense greens, bright reds and violets are loved, with green being the most prized. The jewelry world often relied on"Thick, yang, pretty, positive, and"with"Light, yin, old, evil, flower"These ten words are used to judge the green color of the jadeite rough.
Thick", i.e., full green, rich, and heavy without black;On the contrary, the green color is light, and the color strength is weak"Light"。"Yang", that is, the green is bright, bright and generous;Conversely, if the green color is dull and has no luster, it is"Shade"。"Pretty", that is, the green color is uniform and soft, and can be with"bottom"with"water"Coordinate with each other;Conversely, if the green color is unevenly distributed in the form of dots, peaks, and blocks"Old"。"Positive", that is, the green is pure, and the green does not have blue, blue and other miscellaneous tones;The opposite is true"Evil"。"with", that is, the green is uniform, harmonious, not spending;The reverse is true"Flowers"。