Today's Hetian jade market is full of fake jade, mountain material rolling, sandblasting pores, artificial epithelium, and various falsification methods are emerging endlessly. For many Hetian jade birds, they will be deceived if they are indifferent. In this environment, how to avoid Being cheated has become a very important issue. Below we will introduce some practical identification methods for Hetian jade seed.
Method 1: Observing the surface
Hetian jade seed material has smooth surface, warm and strong gloss. It will collide during the handling and scouring of river water, and will leave large and small cracks and collision pits. The cracks are generally filled with oxide or oxidized to form a saccharide (oxidation surface). The appearance of imitation seed material is similar to that of Hetian seed material, but the smoothness and gloss are low, and the surface cracks and collision pits have artificial traces.
Method 2: Observe the reflective gloss
Observing the reflective surface (corner part) of the daylight, the Hetian seed material can not see the grinding surface and the grinding mark during the rotation process, and the reflective gloss is evenly changed during the rotation process. The magnifying seed material can be observed and polished. The surface is in the shape of a line or a sheet, and the reflective luster changes during the rotation.
Method 3: Observe the collision pit
The smoothness of the surface of Hetian seed material does not reach the degree of artificial sanding. If the smoothness of the surface is high and the collision pit is not visible, it is fraudulent. If you can see the collision pit, the gloss must be lower than that of Hetian seed jade.
Method 4: Observation of the luster of the collision pit
The seed material is smooth in the collision pit, and the gloss is basically the same as the external gloss. The gloss of the artificial pit and the external gloss are quite different.
Method 5: Observe the skin and meat
Observe the "meat" next to the seed material. Since the skin color and pores of the real seed material are formed over a long period of time, the meat next to the skin cannot be affected at all. If you see a piece of seed material, the skin and the meat are completely separated, and there is no feeling of "transition", then it is doubtful. The skin color of the real seed material will also have a little transitional color in the skin next to the skin. Of course, this should be observed in the cross section. Moreover, the more important true seed characteristics are that the pores and skin color will extend like a small nail to the meat next to the skin.
Method six: observe the crack
More than 90% of Hetian seed material will have cracks of different sizes. The color of the crack is deeper than the nearby color, but the color difference is not large, which is a gradual transition. The color of the crack at the imitation seed material is different from the nearby color, and it is not completely stained. Sometimes it is directional, almost mesh-like. It is necessary to pay attention to some secondary dyeing at and near the crack. The color magnification of the center of the crack shows that the particles are dyed by the whole body. The color near the crack has no penetration depth, and the color edges have a feeling of smearing and floating.
The fake skin is lighter in color and brighter in color. The cracked area is darker in color and the other places are relatively lighter.
Cracks in artificial polishing materials are often just a simple line, and there are ochre in the lines. These ochre are generally light in the outer weight, and the seed material is just the opposite.
Method 7: Observe the impurity
Some Hetian seed materials have certain impurities, such as white spots, black spots, peeling, and thicker structures. In order to cover these defects, dyeing is performed on the impurity portion. After dyeing, the whole body will be dyed or only the part with good local texture will be left, and the dyed color will be darker and more beautiful, leaving no dyed parts and saccharide skin contact strips neat, clear and sometimes linear.
Method 8: Observe the glucocortic part
The real syrup is the oxidation surface formed by the natural oxidation of iron in the Hetian seed material. The texture is different in different degrees of penetration, and the color naturally blends with the Hetian seed material.
The rind in the Hetian seed material is present at the crack and the thicker part of the nearby structure. All syrups are glossy, and the finer the structure, the stronger the gloss.
The dyed rind of imitation seed material is generally at the crack or in the thick part of the structure, because these parts are easy to absorb the dye, the surface of the rind has low gloss or no gloss, and the surface is rough, which is the reason why the water is lost due to heating during the dyeing process.
There are also some special attentions to the laser coloring of the product. The texture of all parts is good. Only the parts with color are coarse in texture, and the enlarged inspection surface is approximately granular.
There are also some products, some of which have strong gloss and some have a weak gloss, because the rind is not polished or dyed, and the rind is caused by fading during high-temperature polishing.
Method nine: touch
The skin of the natural seed material feels a sense of resistance, which is the "sweat pores" in the jade and the friction of the human hand. The roller seed material feels smoother and smoother, and has a feeling of slippery hands.
The last thing to say is that the identification of seed materials relies more on “feelingâ€, so the identification methods summarized above need to be carefully tasted. In addition, the identification of seed materials should be considered in several aspects, sometimes not one or two. The point can be clearly stated. In this era of rapid advancement of counterfeiting technology, the most important thing is to get started with the real thing, more contrast, only more practice, in order to accumulate more experience in the identification of seed materials, will truly appreciate the mystery.
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