For a long time, Hetian jade seed material dominates the jade market with its expensive price, which has also led to the emergence of various imitation seed materials in the market. This makes many novices and enthusiasts frequently take medicine and are helpless.
The surface of Hetian jade seed material is smooth, warm and glossy, and collisions during the handling and washing of river water will leave large and small cracks and collision pits. Cracks are generally filled with oxides or oxidized to form a sugar crust (oxidized surface). The appearance of the imitation seed material is similar to that of the Hetian seed material, but the smoothness and gloss are low, and the cracks and collision pits on the surface are mostly marked by artificial.
More than 90% of the Hetian seed material will have cracks of varying sizes, and the color of the cracks is darker than the nearby color, but the color difference is not large, which is a gradient transition. The color of the cracks of the imitation seed material is very different from the nearby color, not completely stained, and sometimes it is visible with directionality and is similar to a network. It should be noted that some secondary staining at and near the crack, the color enlargement of the center of the crack can be seen that the particles are the color of the whole body, the color near the crack has no penetration depth, and the color edge has a sense of smearing and floating.
The false skin is relatively superficial and the color is more vivid. Where there are cracks, the color is darker, and other places are relatively lighter.
The crack of the artificial polishing material is often just a simple line, and there is a Qin color in the line, which is generally heavy on the outside and light on the inside, and the seed material is just the opposite.
Some Hetian seed materials have certain impurities, such as: white spots, black spots, peeling, coarse structure and other defects. To mask these defects, staining is performed on the impurity section. After dyeing, it will generally be dyed throughout or only the parts with a better local texture, and the color of the dyeing is darker and more colorful, leaving the unchromed parts in contact with the sugar skin in a neat, clear and sometimes straight line.
True sugar peel is an oxidized surface formed by natural oxidation of iron in Hetian seed material, with different textures and different degrees of penetration, and the color is naturally integrated with Hetian seed material. The sugar crust in the Hetian seed feed is present at the crack and in the nearby thicker parts of the structure. All the syrup has a glossiness, and the finer the structure, the stronger the gloss.
The various skin colors of natural seed materials are now mixed on the market, and the counterfeiting situation is very serious. Skin color, texture is easy to counterfeit, but this "sweat pores" is difficult to forge. True Hetian jade seed material, no matter how delicate, its surface will have countless fine pores, just like the fine pores on human skin.
Therefore, its characteristics are: it looks very natural, varies in size, has high and low, uneven bumps, staggered, uneven distribution. Of course, some sweat pores are difficult to see with the naked eye and need to be observed with the help of a magnifying glass.
The "sweat pores" of the seed material look uneven, but the hand touch is very smooth, this is due to the formation of the seed material has been washed by the river for thousands of years, and finally the lines have become natural and smooth. The grooves of the rolling material are stiff and not smooth to the touch.
Therefore, it is very effective to learn to associate meat and skin holes when identifying, and some seed materials are coarser in meat, so the pores will be larger. Relatively fine meat of the seed material, the skin holes will also be very fine.
The "sweat pores" of the seed material of various textures are also of different thicknesses, and the real "sweat pores" are distributed in the densely packed small holes on the surface of the seed material, which are concave and convex, uniform and fine, and the luster inside and outside the holes is uniform.
Under metering, the densely packed holes on the uneven surface are very natural and shiny, and the finger feels delicate to the touch.
Although the shape of the manually ground seed material is extremely similar to the shape of the real seed material, the surface is quite smooth, bright and has a series of scratches, and there is no "sweat pores".
The artificially made false pores have a very even distribution of pits on the surface and have no grease luster. At present, the counterfeiting methods on the market cannot achieve a similar effect, and the fake seed material does not have "sweat pores" at all.
The surface of the false pores intuitively looks like the pores are going in one direction, there is no feeling of uneven size, and some parts of the bulge are flat, that is ground, because after sandblasting without polishing and polishing, the sandblasting surface is too rough to show the feeling of grease.
Since the rolling process is equivalent to polishing, the surface tends to be very shiny. This is inconsistent with the traditional processing of Hetian jade, where the surface of hetian jade carving is often matte rather than shiny. In addition, the false skin color floats on the surface, although the color is bright, but there is no natural layering of transition, bright and dazzling, it looks uncomfortable, and it appears dry and has no oily feeling.
It should be noted that when looking at the pores of the seed material, do not look directly, take the jade side light to see, as long as it is polished material or fake material, the surface has a layer of smooth surface, destroying the original pore layer, so the better the polishing material, the less likely it is to see the pores.
True "sweat pores"
No matter how clever the means of counterfeiting, the texture and color of the fake seed material will not be as delicate and fresh as the natural seed material.
The so-called "sweat pores" are also not so regular, oily and natural, and not as spiritual and affinity as the real seed material. The pores of the seed material can breathe, can you feel it?