Chapter 754: The Problem of Porcelain Tiles
Meng Zitao gave this jade carving to He Wanyi next to him, and then said: "The level of the author of this jade is very high, I estimate that it has a master level." Pen "Fun" Pavilion www.biquge.info"
"Ah, is it so tall?" Lao Bian was stunned.
After He Wanyi saw it, Song Xiaofeng also appreciated it, nodded and said: "The level is indeed very high, but unfortunately this is a Dushan jade carving, if it is Khotanese jade, it can be tens of thousands, and it will be even more difficult to say if it is seeds." ”
Lao Bian smacked his mouth, he also thought this jade was very good before, but because of the material problem, he never took it seriously, he didn't expect the author's level to be so high and so valuable.
Seeing Lao Bian's slightly regretful look, Meng Zitao smiled and said: "Boss Bian, I still like this jade, but I don't need to give it to me, even if it's a thousand yuan, how about it?"
Lao Bian hurriedly waved his hand and said no, he is also a person who wants face, and he still needs money to give away things, and he can't get by if he doesn't talk about face.
However, Meng Zitao still took out a thousand yuan and gave it to Lao Bian.
Song Xiaofeng took the elated old side, went out to pay by card, and after a while, he walked in with a young man who looked a little similar to him.
Song Xiaofeng introduced: "Mr. Meng, this is my son Song Jianliang, who now has opened a small museum, mainly collecting all kinds of porcelain, I hope you can guide him when it is convenient for you in the future." ”
"In the future, I will ask Mr. Meng for more advice. Song Jianliang smiled, holding his business card in both hands and handing it to Meng Zitao. To be honest, when he first saw Meng Zitao, he was really surprised that he was too young, but when he saw his father's attitude, he was relieved.
"You're welcome, let's learn from each other. Meng Zitao exchanged business cards.
After greeting for a moment, Song Jianliang put the brocade box he was holding on the table and opened it, only to see that it was a piece of blue and white porcelain.
Song Xiaofeng made an invitation: "Teacher Meng, please also taste." ”
Meng Zitao nodded, picked up the porcelain piece and carefully appreciated it, in fact, as soon as the thing came to his hand, he felt that something was not quite right, and he also roughly found out the problem, but people took things from afar, it is not good to send people away casually, and from this piece of porcelain, he can also see some of the latest imitation Yuan blue and white technology.
After about twenty minutes, Meng Zitao raised his head: "Teacher Song, don't be surprised if I said something wrong." ”
"No, no, you just say it. Song Xiaofeng waved his hand, and he already had a bad feeling in his heart at this moment.
"I don't think this piece of porcelain is old enough, why do you say that? Let's take a look at the photos on my phone. ”
While speaking, Meng Zitao took out his smartphone and pulled up a photo of Yuan Qinghua: "This photo is a partial photo of Yuan Qinghua in my master's collection, you can take a look and see if there is a problem." ”
The photo is very clear, Song Xiaofeng and his son felt that there was no problem after seeing it, it was a positive Yuan blue and white standard.
Next, Meng Zitao enlarged the photo on his mobile phone, selected one of the areas, and began to explain: "We can clearly see these black spots with strong characteristics of the times, and pay attention to the black spots in this area, which are distributed in dots along the direction of the pen." ”
"This is in line with the fact that the small particles that are not finely ground are carried by the craftsman's brush, leaving traces of distribution in the direction of the brush. If you know anything about the craftsmanship of porcelain, you should know that these black spots are caused by the original metal oxides left behind by the insoluble particles in the glaze. ”
Meng Zitao paused and looked at the father and son, both of whom said that there was no problem.
Meng Zitao put down his mobile phone, magnified part of the porcelain tiles with a magnifying glass, and said: "If you look here again, you can obviously see the difference, why is this? In fact, the reason is very simple, this is the trace of the times brought about by the refining and purification technology of raw materials by modern industrial technology. ”
"Because the pigment is very fine, the particles are evenly distributed, and dissolved in the glaze at high temperatures, these dark colors are iron oxides formed by the oxidation of iron ions in the original process of absorbing oxygen, so they can not be distributed in the direction of the pen, which is why there is a cross or even vertical distribution in the direction of the pen. ”
Meng Zitao continued: "Of course, if this is the reason alone, the reason is still a little weaker, let's look at the color contrast and the thickness of the pigment, from the color contrast of the cobalt blue background and the black spots or patches on the photo, it is clear and contrasting, cobalt blue is bright and stable and quiet, and the black or dark blue spots and patches are layered and contrasted with the background cobalt blue. ”
In addition, the thickness of the blue and white pigment is also contrasting, the black rust patches indicate that the firing time is sufficient, the iron ions have sufficient time to enrich and reduce to iron oxide during the reduction period, and the dark spots indicate that the coarse particles of the pigment are not dissolved in the glaze. ”
But on the other hand, looking at the color on the porcelain plate, the contrast of several colors is not obvious, the layers are not distinct, and the thickness of the pigment can not be seen to be much different, indicating that the firing time is not sufficient, not enough to enrich the iron ions, it is directly reduced to iron oxide, and there is no coarse particles of pigment scattered distribution. ”
Meng Zitao put down the porcelain tiles in his hand: "But then again, we can only observe these characteristics after showing the details with a magnifying glass, and if there is no comparison of the real thing, because the difference in details is very small, it is difficult to see these problems." So, for experienced people, it's okay, for the average porcelain lover, this kind of high imitation is simply a big killer. ”
In the end, Meng Zitao couldn't help but sigh, the current Yuan Qinghua high simulation is "changing with each passing day", today you are still saying that the black spots, rust spots are Su Ma Liqing's ID card, tomorrow with a heavy pen thickened green material to imitate the characteristics of the black spot imitation has come out; the day after tomorrow when you are ecstatic to point out the heavy pen thickened artificiality, the day after tomorrow imitation will directly switch to the same chemical composition of the green material, the firing of the imitation Su Qing characteristics are clearly visible, such as fake replacement.
It can be said that the struggle between antique identification and high imitation has been hovering between "high road" and "magic high one", and if you do not study high imitation technology for a period of time, it has been completely outdated, waiting for the eye.
"Listening to your words is better than reading a book for ten years!" Song Xiaofeng sighed, although there is a problem with his own things, it is still worth listening to such a wonderful explanation from Meng Zitao, for him now, knowledge is the most important, and money has been placed in a relatively low position.
Song Jianliang also nodded yes, after listening to this explanation, he was convinced of Meng Zitao, thinking that he was at Mencius Zitao's age, and he was still thinking about how to pick up girls, and Meng Zitao was already a well-known expert in China, he was somewhat ashamed.
Meng Zitao said a few polite words, and then said: "Teacher Song, take the liberty of asking, I don't know if it is convenient for you to tell me the origin of this porcelain piece?"
"Absolutely. ”
Song Xiaofeng said: "This porcelain piece was actually obtained by accident when I traveled to Xiangjiang, and the price was not expensive at that time, and it only cost more than 600 yuan when converted." ”
While speaking, Song Xiaofeng took paper and pen and wrote down where he bought porcelain tiles.
"Thank you. Meng Zitao took the paper, the things were purchased in Xiangjiang, and the source was complicated.
Everyone chatted for a while, and heard someone knocking on the door, and then several men came in from outside the door, led by Lao Bian, who had just left.
Song Xiaofeng asked, "Old Bian, what are you doing here?"
Lao Bian said embarrassedly: "My friends, I also have something I want to ask Meng Zitao to help take a look, I don't know if it's inconvenient." ”
Meng Zitao said with a smile: "It's nothing inconvenient, and it can also give me more experience." ”
"Teacher Meng, you are too modest. Seeing that Meng Zitao agreed, everyone was happy and said a few good words.
Meng Zitao said with a smile: "Please take out the things to be identified." ”
Everyone immediately gathered around, and Song Xiaofeng next to him frowned and said, "It's okay if you want to ask Teacher Meng to appraise it, but there has to be an order, what's the matter with rushing up?"
Everyone hurriedly nodded awkwardly and said yes, looked at each other, and the oldest old man was at the front.
What the old man took out was a feather fan: "Teacher Meng, my fan is made of tortoiseshell, please help cut off the next generation." ”
"Okay. ”
Meng Zitao looked down and saw that this fan was foldable and pasted with black gold feathers, gorgeous and generous, judging from the style, it looked like a Western royal use. But as soon as I looked at the material, I found a problem.
"Sir, this fan is not bad, but it should not be made of tortoiseshell. ”
"Ah, how could it not be made of tortoiseshell?" the old man had a hard time accepting Mencius's statement.
Meng Zitao said: "Listen to me, the appearance of a real tortoiseshell is a nearly round, triangular or polygonal plate, 10~20 cm long, 1.5~3 mm thick, thin edges, slightly thicker in the center, dark brown translucent on the surface, and dark brown and creamy yellow patterns, smooth and shiny; the inner surface is densely covered with white stripes or spots, and there are criss-cross grooves; the texture is tough, the section is, and it is not easy to break. ”
"And your fan bone is actually made of the dorsal armor shield of an ordinary sea turtle, the appearance of this shield is rectangular, fan-shaped or irregular shape, different sizes, 8~35 cm long, 9~19 cm wide, the shield is large and thin, the edge has no bevel and parallel layer lines, the surface is creamy yellow, with tan or black spots, slightly radial arrangement, generally lighter and transparent than the hawksbill turtle. If you look closely, is that what I said?"
The old man combined with Meng Zitao's narration, carefully observed his feather fan, and sure enough, he found a feature different from the tortoiseshell, but because the maker handled it well and there were feathers to cover it, he didn't notice it.
"Thank you, Mr. Meng, for your advice. The old man squeezed out a smile on his face, thanked Meng Zitao, and then turned around and went out with his things.