After hearing the ins and outs of the incident, everyone felt that there was something fishy about it. Otherwise, if the bottle was genuine, even though the stall was in a relatively remote location, there were so many people in the ghost market, and it was almost the end of the ghost market. Well, there¡¯s no way no one could see it, right? Therefore, both Yuan Hongjian and Du Yile felt that this jade pot spring vase should have relatively big flaws, so they finally kept it until the moment Zhuang Shengjing discovered it. Besides, the total amount is less than 20,000 yuan, is it just to deceive Zhuang Shengjing? How much hatred would there be to set up a special bureau for Zhuang Shengjing? Of course, even if there is something wrong with this Jade Huchun Ping, we can't make an empty conclusion. Therefore, everyone turned their attention to Chu Chen, who had already completed the appraisal, and wanted to hear his answer. Chu Chen chuckled and said: "This jade pot spring vase is indeed very outstanding in terms of performance, but I don't know if the maker is superfluous or something. He actually made flint red on the bottom of the vase. It is really a bit nondescript, and it also leaves Hearing this, Zhuang Shengjing had a different opinion and said: "Teacher Chu, if I remember correctly, the reason why there is flint red is because the fetal soil has flint red. If the fetal soil is refined carefully, Then there is rarely a phenomenon of flint red, such as the finely polished small utensils of the third dynasty of the Qing Dynasty. However, the firing technology of porcelain in the Xianfeng Dynasty was weak, and the flint redness was not as good as that of the third dynasty. Is it normal to have flint red? You're right!" Chu Chen nodded. Generally speaking, high-quality porcelain stones and earth minerals are often highly weathered and contain trace amounts of iron. Ancient craftsmen used old-fashioned iron removal methods to dilute the porcelain clay and then filter it with a mesh. Putting a few primitive magnets in front of the net will not be able to absorb trace amounts of iron. The porcelain body made of this kind of porcelain clay needs to be dried for a long time after the glaze is applied. Let the water in the body and glaze juice evaporate cleanly. Next, add dry mat cakes, slag, and saggers, and put them into the dry kiln. Only in this way can we produce porcelain as white as jade, and the flint red phenomenon will not appear on its astringent body. This is the real reason why there is no flint red phenomenon on most ancient porcelain bodies. On the contrary, when the glaze is not completely dry, at a specific high temperature in the kiln, the iron molecules in the blank will undergo physical and chemical reactions under specific conditions. As a result, the iron molecules turn into iron oxide and are firmly attached to the glaze. On top of the astringent fetus. This is the flint red phenomenon. "Mr. Zhuang, what you said is indeed possible, but this is under the condition that flint red is naturally formed. But like your jade pot and spring vase" At this point. Chu Chen hung up the bottom of the bottle to dry: "The flint red color looks unnatural, and there are also dots of black matter. If you look carefully, you will know that these black spots are actually iron slag." "Iron slag. ? !" Hearing what Chu Chen said, the three of them were quite surprised. They quickly came forward and took a closer look, and found that it was really iron slag, especially with the help of a magnifying glass. actually. Chu Chen had already heard about the method of making flint red from Uncle Wu. At that time, Uncle Wu told Chu Chen that when he went to the porcelain capital in the 1980s. He saw someone using slag iron from the ironworks to adhere to the feet. He asked the person why he did this, and the person told him that he was making flint red. but. Using this method, although the porcelain still has a flint red color after it is fired, the black iron slag will also stick to the feet. It is a relatively low-level technique and can only deceive some beginners. Zhuang Shengjing smiled bitterly and said: "It seems that my eyesight is too poor. I didn't even see such a flaw! However, since the jade pot and spring vase are so realistic, why did the maker add superfluous things to this?" Chu Chen and others couldn't figure out the problem. It couldn't be said that the producer didn't care about such a high-quality imitation, and used it to test the production method of Flint Red, right? Everyone looked at each other in shock, unable to think of a reason for a while. Yuan Hongjian was a relatively open-minded person and never tried to get into trouble. When he came to his senses, he said: "Forget it, don't think about it if you can't figure it out. But you still need to pay attention to that teacher. I think there is still something wrong with this person." "Zhuang Shengjing nodded. If Teacher Ren hadn't reacted like that and acted like that, he wouldn't have been fooled like that. However, even if he knew that Teacher Ren had a problem, he couldn't go to the other party to settle the score. Even if he didn't say that he jumped into this trap himself, Teacher Ren could definitely say that he didn't know much about porcelain and misunderstood because he was proficient in it. It's jade. "Oops!" Suddenly, Du Yile's expression changed and he exclaimed, then stood up and hurried into the back room. The three of them were startled by Du Yile's sudden action. After a moment, Yuan Hongjian's mind moved and he said in surprise: "I don't think I bought it from that teacher Ren or listened to his opinion." What is it?" Chu Chen and Zhuang Shengjing thought about it.??, I think it is really possible. Of course, even so, you may not buy a fake. The key depends on what Du Yile bought and how good his eyesight is. However, since that teacher Ren was suspected of setting a trap for Zhuang Shengjing, it was appropriate to check the things he bought. After a while, as Yuan Hongjian said, Du Yidong walked out of the back room holding something. Seeing this situation, Yuan Hongjian asked: "I'm talking about Laodu, you have been in the industry for so many years, and your level is not low. Why do you have to ask others to buy things?" Du Yile replied: "You This is not nonsense. I study porcelain and have only a little exposure to jade. There are many difficulties in collecting jade. Even if you like something, you have to ask others! " Everyone agreed with these words! However, there are many fake jade products on the market, and there are endless counterfeiting techniques. Not to mention those who are new to jade collection, even some experts have difficulty in distinguishing authenticity. And if you want to learn jade appraisal, you need a lot of background knowledge. The shape, decoration and use of jade in each historical period are different. Collectors must not only memorize a large number of jade characteristics, but also understand the historical knowledge and archaeological data of each period, identify jade materials, and understand the jade-making technology of different eras. Features. This point alone has stopped many collectors who want to learn jade appraisal. Therefore, identifying jade is not a day¡¯s work and requires long-term accumulation of experience. It's not enough to just browse through jade catalogues. You must start looking at ancient jades, visit more museum collections, communicate more with experts, and persevere, only then will you be rewarded. "Teacher Chu, I would like to ask you to help me identify it" With that, Du Yile opened a larger box, and inside were three pieces of jade, a jade bear from the Han Dynasty, and a jade bear from the Han Dynasty. A jade jade from the Ming Dynasty and a jade pendant from the Qing Dynasty. Chu Chen quickly said that there was no problem, and then picked up the jade and observed it carefully. Although the materials used for these three jades are a bit different, they are all contemporary, and each has its own advantages. They can be regarded as small masterpieces. However, because the three jades are not large and the materials are not outstanding, their value is It's not that high, it only adds up to a hundred thousand. "Mr. Du, congratulations, these are all genuine!" Chu Chen smiled and nodded to Du Yile. Hearing this, Du Yile secretly breathed a sigh of relief. He had previously shown these pieces of jade to his friends, and now that they have been approved by Chu Chen, there must be no problem. "Please help me take a look at this jade sword from the Han Dynasty" Then, Du Yile opened another box, and inside was the jade sword he mentioned. This sword is made of white jade, but it looks dirty overall, as if it was unearthed not long ago. The body of the jade sword is plain with no decorations. The sword grid is embossed with chi patterns in high relief, and the sword head is embossed with dragon patterns. The workmanship is all in one go. Judging from the carving, it is indeed the style of the Han Dynasty. But as soon as he got hold of the jade sword, Chu Chen immediately felt that the color of the jade sword seemed a bit too white, and it really didn't look like how white jade should behave. After closer inspection, he found that the blade of the jade sword was not jade at all. . "How is it?" Du Yi was happy to see Chu Chen finish reading, so he hurriedly asked. Chu Chen shook his head: "This thing is not true!" "Sure enough!" Du Yile let out a long sigh, looking a little sad for a moment. But after all, he had gone through many storms, and he was somewhat prepared for such an outcome, so he immediately adjusted his mood. " However, he bought this jade sword with real money after all. He had to find out what happened, so he looked at Chu Chen again, wanting to hear what Chu Chen said. Chu Chen said bluntly: "The blade of this jade sword is actually not jade, but glass." "Glass?" Among the three of them, except Du Yile, who had heard about this thing, the others had not heard of it before. Never heard of it. Yuan Hongjian quickly asked: "Teacher Chu, what is this glass?" Chu Chen explained: "Glass is actually a kind of fake crystal made by burning ore. This thing has been imitated into jade for hundreds of years. In the Ming Dynasty, Cao Zhao's "Gegu Essentials" introduces that "fake crystals burned with medicine are dark green in color, with gas eyes, or yellow-green, and white, white and bright, which is called glass." Moreover, the ancients also said that "jade must be as high as saltpeter," which means that white jade must be as high-grade as glass. It can be seen that it is difficult to distinguish between glass and jade. " Yuan Hongjian asked again: " "How can we distinguish between the two?" Chu Chen replied: "No matter how difficult it is to distinguish, the true and false ones are different after all. In terms of color, the white of white jade is often green, and pure white is rare.Glass is a pure white color that is even and clean. As far as the nature of jade is concerned, jade is warm and delicate, like fat or ointment. Although glass is also warm and moist, there is inevitably a ray of light in its luster. " "The most important thing to mention is that white jade is a natural product, and it is difficult for all the bodies to be uniform. It contains jade tendons, jade flowers, etc. Glass is artificially made and does not have the above-mentioned appearance. The texture of white jade is solid and there are no bubbles to be found. No matter how well the glass is processed, bubbles and gas holes are often exposed. In this regard, you can use a magnifying glass to look at these places" (To be continued, please search Piao Tian Literature, the novel will be better and updated faster!