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Text Chapter 251 Clam Light

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    From the above, during testing, as long as a certain porcelain is detected to contain this trace element or the content of this trace element is relatively high, it can be concluded that it is a fake. On the contrary, if the "sample composition" is "in good agreement" with ancient porcelain  This eliminates the possibility of counterfeiting and identifies it as genuine.  However, if nothing else, why must "modern chemical preparations containing certain trace elements" be added to create fake ancient porcelain?  Just like the plain three-color bowl now, the forger used glaze refined from ancient porcelain. In this case, it is impossible to tell the authenticity using elemental analysis. ??????????????????????????????? However, this bowl has used some old-fashioned methods, so the authenticity can still be verified using elemental analysis.  However, Chu Chen just discovered that there was a hole as big as a grain of rice at the bottom of the bowl. It looked very new, so this must have been tested using thermoluminescence dating technology, otherwise the results would not have shown that this  The plain three-color bowl will be authentic.  "And if thermoluminescence dating technology is used for testing, this bowl, not to mention being irradiated with X-rays, even if it uses an old base, the thermoluminescence dating technology will only detect that it is genuine.  After all, for this kind of test, it is impossible to make holes anywhere else except the bottom.  When Curator Gao heard what Chu Chen said, he was greatly surprised: "Ah! Lao Di took over the fetus? How is this possible? This bowl is obviously one piece. How could it be that Lao Di took over the fetus?" Chu Chen met Curator Gao  If he didn't believe it, he pointed to a place inside the bowl and said, "Director Gao, this bowl is indeed very real, but I have to say that it still has flaws. If you don't believe me, touch here. Do you feel the ups and downs?  "Hearing this, Director Gao quickly felt it with his hands.  Unexpectedly, as Chu Chen said, that place was indeed higher than the surrounding area. This situation surprised Director Gao.  ¡°Some people may say, isn¡¯t it just a little higher than other places? What¡¯s the problem with that?  Maybe it was due to a mistake by the craftsmen at that time?  But Director Gao knew that this situation was not caused by a mistake at all. Even if it was a bowl used by ordinary people, the inner wall would be smooth when touched.  What's more, it's something made in an official kiln?  The current situation must be caused by the imitator accidentally not paying attention when repairing the tire.  Although Curator Gao knew that there was probably something wrong with this bowl, at the time of acquisition, this bowl cost over 100,000 yuan. If it was a fake, he would not be sad.  He still has to bear a lot of responsibility. After all, he decided to accept this bowl in the first place.  So, Director Gao asked without giving up: "Mr. Chu, apart from this, I wonder if you have found any other problems?" "Yes!" Although this is a bit cruel to Director Gao.  However, this appraisal was an antique and there was no room for sloppiness. Therefore, Chu Chen nodded affirmatively.  "Where" Before Director Gao could finish speaking, he saw a middle-aged man in his forties.  There is also a gentle-looking man in his mid-thirties.  He hurriedly came to the front of everyone.  The middle-aged man took a deep breath and said, "Director, why are you so anxious for us to come back?" "Hey!" Director Gao sighed and said, "Let Xiao Zhang tell you.  "So, the staff member named Xiao Zhang briefly explained the matter to the two of them. After hearing the cause and effect, they were both extremely surprised.  But after being surprised, the middle-aged man smiled and said: "I have already said that Zhao Yiping is not a good person. Look, I am right!" Director Gao scolded: "Jin Yan, what are you talking about now?  "Since you have long thought that Zhao Yiping is not a good person, why haven't I heard you say that before?" Jin Yan shrugged and said, "Director, it's not that I don't have evidence, otherwise I would have told you."  The director shook his head and said: "Everyone will make an afterthought, so you'd better say a few words less. Come on, let me introduce you first." After that, Director Gao introduced Chu Chen and Jin Yan respectively.  Through the introduction, Chu Chen also knew another man named Sun Qiang, the teacher Xiao Sun mentioned before.  When the two of them saw that Chu Chen was so young, they didn't look down on him. On such an occasion, curator Gao wouldn't introduce him to both parties so solemnly if he didn't have much ability. In addition, Chu Chen was Mr. Liu's  Gao Tu, Jin Yan and Sun Qiang were all very enthusiastic towards him.  But the two of them were not only very enthusiastic towards Chu Chen, Li Beibei, who was standing aside, also felt their enthusiasm.  Especially Sun Qiang, when shaking hands with Li Beibei, he kept staring at her with an expression that was almost drooling, and he just refused to let go of Li Beibei's hand.  But Li Beibei didn't treat her with kindness, and Sun Qiang immediately paid the price for his behavior. ?????????????????Li Beibei shook his head angrily, and Sun Qiang woke up from his nymphomaniac state in an instant. His face turned pale from the pain, and he broke out in cold sweat. He repeatedly begged Li Beibei to let him go, which made the people around him laugh secretly.  Incessantly.  Xiao Zhang even cursed secretly, "You deserve it. Who told you to be so lecherous and often molest female employees? Now the retribution has come."  Li Beibei sneered again and again, and only let Sun Qiang go when he felt that he had been taught a lesson. However, if the current situation was not inconvenient, she would not let him go so easily.  At this time, Director Gao smiled and said: "Okay, Mr. Chu, you can continue talking." He has now looked away. What is true cannot be false, and what is false cannot be true. Since the matter has already happened, there is no way to hide the fact.  Solving the problem, making amends, and recovering losses as much as possible is what he should do now.  Chu Chen picked up the bowl and said: "Okay, let's talk about the problem of this bowl." Seeing this, Jin Yan asked strangely: "Hey, this is not the three-dimensional bowl that I thought was not real before.  Colorful bowl? What, is there really a problem? It seems that what I said was right!" Hearing what Jin Yan said, Director Gao felt really angry and said angrily: "Jin Yan,  Can you please stop playing second-guessing? When you said there was a problem, I asked you what the problem was, but you couldn't explain why. Now you say that again, then I ask you what the problem is.  If you can't tell, I'll deduct your bonus for this month!" After Jin Yan heard this, he was a little embarrassed. After all, he was a porcelain appraisal expert in the collection department. It was also his shame that he couldn't see the problem of fakes, so he hesitated.  Said: "This Curator, I just feel that this thing has a smug look and is unnatural. Logically speaking, such a thing from an official kiln should not have this situation, so I came to the inference, but the specifics  I really can¡¯t tell where it is.¡± After listening to what Jin Yan said, Chu Chen said: ¡°Teacher Jin is indeed right. This thing has a thief¡¯s light. As for the thief¡¯s light, it¡¯s nothing else, it¡¯s this clam.  "Light." "Clam light?" Everyone looked at the bowl after hearing what Chu Chen said.  Clam light refers to a colored film-like substance produced on the surface of lead-containing overglaze colored porcelain and low-temperature lead-glazed porcelain, which is corroded by external physical and chemical substances and changes in the porcelain itself.  After decades of porcelain containing lead glaze, the colored surface will naturally oxidize to produce a colored light. If you look sideways at the light, you can vaguely see the colorful light above the colored light.  There is also a faint colorful aperture surrounding the side-viewing color material.  As the "porcelain age" increases, this colored film will slowly increase and thicken. When it reaches a certain thickness, it will produce a flashing "colored light" similar to that inside a clam shell, so people call it  "Clam light".  Because these colors and paintings of the Kangxi Dynasty are all low-temperature lead-containing glazes, the hardness of the glaze and colored glazes after firing is relatively high. Over time, this kind of clam light will be formed under natural oxidation.  The yellow three-color dragon-patterned bowl in front of me has obvious clam light and looks very beautiful.  "Mr. Chu, are you saying that the clams were just added? I think it's true!" Jin Yan said with a frown.  Chu Chen chuckled and said: "Teacher Jin, the clams on this bowl are indeed real at first glance, but when we compare the details, we have to discuss it." "I think you know, Teacher Jin, it's really  The clam light surrounds the color tightly, with a very small and uniform aperture. The clam light is more obvious where the color is thicker, and the clam light is lighter where the color is thin. The fake clam aperture is thicker, flaky, and unnatural.  Moreover, the aperture around the thick color is as obvious as the aperture around the light color, not really that natural. " "That person is really amazing. I don't know how he did it. Some details are the same as the real thing.  , especially the beating, active, agile, and deep feeling of the real clam light, I really admire it. " "But it can't be fake, and it can't be fake, you see.  The clam light in this thinly colored place is actually the same as that in the richly colored place next door. Do you think this is really possible? And if you look again, there is actually a clam light on these two leaves, although the color on the leaves is the same.  There is not much clam light, but if this is a real plain three-color bowl from the Kangxi period, do you think it is possible? "The naturally formed clam light will only be around the color material, and of course not on top of the color material."  Here, even Professor Qin and others, who are not proficient in porcelain appraisal, understand that the clam light must have been artificially added.  At this time, Jin Yan finally knew why he felt this way.  Although this clam light is indeed very realistic, it is the details that determine success or failure, just like a piece of mouse droppings, it will breakJust like porridge, it is these few places that make the clam look unnatural, giving it an awkward feeling overall.  Of course, this feeling can only be felt by some experienced experts. Most people will only think that this bowl is genuine.
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