Tian Huangshi identification method

How to identify the "King of Stones" Tian Huangshi, this is a problem that Shoushan Stone collectors and connoisseurs are very concerned about, and also a necessary identification ability. Tian Huangsu has the saying that "Easy Gold is three times". Because of its rare and difficult value, the value is high. So as early as in the Qing Dynasty, there were merchants who used Lianjiang Yellow to fake Tian Huangshi. Nowadays, the development of science and technology has also provided opportunities for counterfeiting. Some lawless elements in the stone market often use the similar features of Tian Huangshi and certain stone species, or shoddy or fake. Tian Huangshi collectors must be prepared. How to identify Tian Huangshi? The experience of ancient and modern Shoushan stone connoisseurs and researchers to identify Tian Huangshi can be summarized as shape, stone skin, hue, texture, crack shape, feel and specific gravity.

It is very important to master how to identify Tian Huangshi. In fact, the most important secret to identify Tian Huangshi is: to identify the most important sign of Tian Huangshi depends on the blood (red tendons). Because in all the stones in the world, no single species has this feature. Red grid and bloodshot are unique features of Shoushan Stone, but other varieties of red grid in Shoushan Stone may also exist, while bloodshot is not only other stone species, even other varieties in Shoushan Stone, so whether it has bloodshot Is to identify whether it is the most reliable feature of Tian Huang. The finer the blood, the rules, the better.

Under normal circumstances, the color of the single layer of Tian Huangshi is yellow, white, black, green, the color is thick and light, the distribution of the overall unity, and some of the two sides are different, and some are in the form of a block, the texture also has advantages and disadvantages. . The skin color is pure as the yellow tooth, the texture is extremely pure, called Huangtian Yellowstone; yellow and grayish green, the texture is slightly indurated, the color is hemiplegic; black and slightly green, the skin is clear, it is also high quality; the skin color is gray and light The light color is deep and partial; the black is sandwiched with small yellow-green or small pieces of gray, the lines are coarse and complex, and the psychic is poor, mostly hardfield yellow or mixed stone. Some single-layered Pitian Yellowstone has white skin on one side and black skin on the other side, that is, one side is wrapped in silver and the other side is crow skin.

There are two layers of Tian Huangshi, some have a thin yellow skin inside the crow skin, and some have a translucent white skin inside the crow skin. These two double-layered skin yellowstones, most of which belong to Huangtian Yellowstone, have a fine outer layer of leather, a uniform thickness of the inner layer, a pure musculature, and even a condensate. Moreover, the texture of epidermis tissue of Tian Huangshi is quite characteristic. The epidermis will appear as fine radish with dense mesh, and it will be dense and dense, such as new radish peeling, while the texture of stone such as Qingtianshi and Bahrain is more messy. At the same time, most of the yellowstones are more or less cracked, mostly on the surface, cross-shaped, such as turtle cracks.

To identify the true color of Tian Huangshi, you should not observe it under the light, but observe it under the sunlight. Experts who are good at identifying Tian Huang usually describe the "cooked" and "old" of Tian Huang in terms of shades of color, in order to speculate on the length of Tian Huang's sleep in the ground. Tian Huangshi's color is fresh and unconventional, stable and not turbid, not floating, and its biggest feature is that there is no "fire" and it is mainly yellow. Regardless of Hongtian, Kuroda, and Baitian, there is a layer of “imperial gas” with yellow flavor, but the main pigments and color purity, concentration and sarcoplasmic psychicity of different Tianhuangshi are not the same.

Even the same piece of Tian Huangshi, its color inside and outside is not static. Except for Baitian Huangshi, most of them are thick and thick, especially the large and generous Tianhuangshi. There are very few colors inside and outside. Only the shape is small and the volume is small, so that they can get close to one color inside and outside. The texture of the radish is delicate and the color is not heavy. To determine the appearance of Tian Huangshi, it is generally necessary to start from four. The first is the color, yellowstone is generally yellow, white, red, black and other colors, with yellow as the respect, the thicker the yellow color, the higher the value of the pure. The second is the feel, the texture is dense, delicate, warm, and the price is high. The third is transparency. The value of Tian Huangshi, which will be infiltrated into the "moderate" state, is the highest. Moreover, the less impurities in the slick and light transmission, the better. The pure one is the top grade.

Common counterfeiting:

The first one is to use a stone whose color is close to that of Tianhuangshi and has a radish-like texture. It is pebbled and hardened with a hard material or placed in hard sand, then stained with earth or colored, and then steamed. The color appearance is similar to the skinless Tian Huangshi. This kind of fake field Huang Qi looks like a real thing, but when you look closely, its appearance is densely covered and unnatural. As long as the texture is observed through the appearance, it is known as a pseudo-object.

The second is to fake stone skin. Or use pigment to paint, or use glue to adjust the stone powder to the surface, or the syrup water to heat, and then grind, like the Tian Huangshi tightly wrapped in stone. However, this kind of fake stone is loose and brittle, the particles are coarse, the turbidity is impervious, and the dry knot is like a sputum, which is difficult to be subjected to the knife. When they were identified, they were not seen until soon after they touched or refueled. When carving, you can only engrave a thick line of scenery, but you can't sculpt it.

The third is to change the color of other stone species, making it similar to Tian Huangshi, and "ingeniously" transforming the surface sarcoplasm into the "wrapper" of Tianhuangshi, which is pseudo-cavity, but its cortex is as thin as paper, this kind of fake Product, because the skin color is too transparent, the leather is too soft, so easy to identify.

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