Among the many popular favorites in recent years, the jade collection investment ranks in the forefront. How to appreciate jade? What is the quality of jade with artistic appreciation? Li Kunhong, general manager of the Gaogu Cultural Exchange Center, made a detailed analysis of the jade appreciation issue.
Li Kunhong said that jadeite is an emerald hard rock with a density of 6.5° to 7° Mohs. It is an alkaline pyroxene in monoclinic pyroxene. Red is green and green is green, so jade is not necessarily green. Because the red jade is rare, and far less popular than the green jade, the "Jade" has become a special word for green jade.
Jade's collection investment, first of all pay attention to "jian". The identification of the authenticity and quality of a jade is mainly judged from the four aspects of species, water, color and land: "species" are roughly classified into glass species, ice species, oil species, bean varieties, etc. according to the grades, among which glass The species is the best. The term “water†is also called “smartâ€, which refers to the transparency of jadeite, which is generally transparent, transparent, translucent, micro-transparent and opaque. The higher the transparency, the higher the value. "Color" refers to the color of jadeite. The color of jadeite is rich, and it can be divided into yellow, white, green, red, purple, black and blue, and can appear on a piece of jade at the same time. This is the characteristic that ordinary jade does not have. "Ground" is the degree of coordination between jade colors. The structure of "ground" should be fine, the color should be uniform, the impurities should be less dirty, and have certain transparency. The colors are white, gray, yellow, black, blue, purple, lake green. Wait.
Li Kunhong said that due to the continuous improvement of various anti-counterfeiting technologies, fake and jadeites flooded the market. The market-produced jade is divided into A goods, B goods, and C goods. B goods are bleached and acid treated to remove impurities and then filled with resin, also known as bleached jade, which destroys the natural structure and durability. Therefore, the gloss is poor under transmitted light, the color is blurred, and the light is dull; C goods are artificial. Coloring, also known as dyed jade, shows that the color distribution of this jade is unnatural under transmitted light.
Now the technical indicators of jade identification have been unified. As a jade collection enthusiast, if you can't identify yourself, you can go to the nationally recognized jewelry appraisal center and ask for professional identification.
How does Myanmar A cargo jade distinguish eight characteristics for you to practice?
The rare natural jade bead chain, 23 jade beads with a diameter of 20.71 -17.35 mm took a sky-high price of 106 million Hong Kong dollars
Impurities: Jade A goods are magnified and observed, sometimes see yellow, brown, black impurities; jade B goods are relatively pure, can not find impurities. 2, the gloss is weak, mostly resin luster and waxy luster, A cargo jade is a brighter glass luster; A goods: natural jade without any chemical treatment, composition, structure, color, transparency are kept in a natural state Attributes, only the shape of the jade by mechanical processing, with collectible value
Many people know that jadeite is produced in Myanmar and has naturally formed over several years. In the face of the market's mixed jade products, how many are natural? Because of the diversity in the market, the jadeite is divided into many grades, such as jade a cargo, jade b cargo, jade c cargo, etc., what are the differences between these abc grades? People who know a little about jade know that jadeite is a natural jade, the best jade, but most people don't know what jade a goods mean? Do not know what kind of characteristics of jade a cargo? Or what kind of real is the natural jade? Next, Xiaobian will come with everyone to take a good look at the characteristics of the jade a cargo. To identify the jade a cargo in detail.
Emerald A goods refers to natural jade that has not been chemically treated by filling and coloring. It has long been recognized in the industry and is customary as A cargo jade. The natural A cargo jade absorbs the essence of the sun and the moon, and is full of spirituality. It is also called “living jade†in the folk. After a long period of wear, the A jadeite is constantly in contact with the human skin, and the jade will be more moist. The human body will also receive health care, and the wearer's mood is also very pleasant. This is what people often say, "people raise jade, jade raise people", and people can be mutually cultivated and human jade can communicate.
Gloss: After the surface of the jade A cargo has been polished, it is flat as a mirror, with strong reflective properties. It is a glass luster. After the acid and alkali soaking treatment of the jadeite B, the structure is loose, and the dissolution pit is not seen before filling. It produces diffuse reflection and is pockmarked; after the jade B goods are filled with glue, the surface is made of resin luster and has no spirituality; if the jadeite B is filled with rubber and then polished, the resin gloss spot is still visible in the filled pit, and the overall resin gloss Mixed with glass luster.
Color: Jade A goods are natural and layered; the color of Jade B goods is formed by the color of the original color, bright and yellow. Due to the destruction of the jadeite structure, the original optical properties have also changed, so the color distribution of the jadeite B goods has no layering and chaos.
Structure: It can make jadeite materials of jadeite B. It is mostly jadeite with more impurities and loose structure. After being soaked and corroded by strong acid and alkali, some substances are brought in and out, forming corrosion between mineral crystals on the surface and inside. , the internal connected cracks and the surface channel network are generated, and the internal cracks are jagged tensile cracks. Under the condition of transmitted light, the internal longitudinal and transverse interlacing cracks are visible, which seriously affects the permeability; under the reflective condition, the surface of the dissolution pit or the net is clearly visible, and the original glass luster of the jadeite is lost.
Bubbles: Refilled jade B goods in the surface layer or cracks in the colloid visible residual bubbles.
Impurities: Jade A goods are magnified and observed, sometimes see yellow, brown, black impurities; jade B goods are relatively pure, can not find impurities.
Fluorescence: Jade B has a medium-yellow yellow-green, blue-green fluorescence.
Thermal reaction: Jadeite A goods are not melted below 800 °C, and carbonized when carbonized jade B goods are heated at 200~300 °C.
Density: In theory, the density of Jade B is slightly lighter than that of A, but this point lacks practicality because the density of jadeite varies within a range.
Since the middle of the Qing Dynasty, people always like to wear a jadeite product in order to seek evil spirits. A. The quality of jadeite has changed greatly. From the jadeite of “Old Pit Glass†to the handicraft made of ordinary “bricksâ€, the jade phase changes are amazing, and the quality and quality are very different. Of course, value and price are also differences between heaven and earth. Ordinary crafts we often see in the market, some are only a hundred dollars. In the current hot jade collection market, an A-car jade boutique is fascinating. Today, the jade collection we are talking about must refer to the jadeite A goods, but not all jadeite A goods are worth collecting. The products worthy of collection may account for less than one in ten thousand of all the output, so the jadeite worthy of collection must be It is a boutique of A cargo jade.
Wan Jade is a B-goods
The most common on the market, and the easiest to be deceived by consumers is the B-Jadeite. It is used to soak the jade with strong acid, and to make the glue, so that the original poor jade becomes clean and transparent, but after a long time, it may restore the original ugly face. B goods jade is also called shower jade.
A goods jade more worn and more moist, the trace elements of which have a good health care effect on the human body, the so-called people raise jade, jade raise people. The B-car jade, immersed in strong acid, and also has a certain amount of radioactive silica gel, can not play the role of jade. And as time goes by, the jade of the B-car jade will become very poor, and it will not achieve the purpose of collecting value.
Then, why is the phenomenon that the jade jade will not stand the test of time and the jade quality deteriorates? This is because the B jadeite has been corroded by acid during the treatment. Although the impurities in the jadeite are removed and the transparency is increased, the structure of the jadeite will have fine cracks and voids. Therefore, it is necessary to press the glue into the cracks and voids under high temperature and high pressure, so that it will be like high-grade natural jade. However, as time goes on, the glue filled with jade will slowly age and fall off, and the jade will become traces and lose its brilliance.
A goods jade Fudou
The fine material is moist, white and transparent like glass, and a touch of green floating in the third Fudou, it is extraordinarily spiritual, and the overall shape is simple and full.
B goods jade is generally used to imitate A goods high-grade jade, but the two can not be compared. B goods jade has been treated, its natural structure has been destroyed, it has been evacuated, and the quality of jadeite has been reduced. The price should be much cheaper than the same quality A cargo jadeite. Therefore, when purchasing jade, you must identify the A and B goods.
B goods jade bracelet
The gloss is weak, the waxy luster, the green unevenness, the colorless root, and the dye deposit at the crack.
B goods jadeite usually has the following characteristics:
1, the color is more vivid, most of the green has no color root, the color and the ground contrast strongly, unnatural;
2, the gloss is weak, mostly resin luster and waxy luster, A cargo jade is a brighter glass luster;
3, the structure is relatively loose, magnified inspection shows that the crystal particles are staggered, displaced, and lose direction;
4, with a gem magnifying glass can be observed on the surface of the orange peel like pits, called the orange peel effect;
5, the density and refractive index are generally relatively lower than the A cargo jade;
6. If the glue is injected, it is pink or yellow-green fluorescent under the ultraviolet fluorescent lamp;
7, gently tapping B goods jade bracelet, its sound is boring, and the sound of A cargo jade bracelet is crisp and sweet.
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