Second, why are the recommended votes so unhelpful?

Dog's head gold is a naturally occurring gold nugget, and because its shape resembles a dog's head, it was given this figurative name. There is also a ** hoof gold called, which is also named because of the shape.

Whether it is dog head gold, or horseshoe gold, is the ancient people's general name for natural gold nuggets, in fact, the shape of natural gold nuggets is strange, like dog heads or horseshoe very rare, but these titles are more popular, and they have been used.

After listening to Qi Fei's introduction, Wang Zhuo thought thoughtfully: "In other words, this thing is naturally formed?" ”

The surface of the gold nugget on the table was undulating, as if it had been baptized by countless years of wind and frost, and the mud and sand in the cracks had not been completely washed away, and it looked ancient.

"It's a treasure." Qiu Lu said with a smile: "There are very few dog-headed gold, it is said that there was an official in the Qing Dynasty who sent a lot of people to find this thing, and wanted to get it back to give it to the Empress Dowager Cixi as a birthday gift, but in the end they didn't find it." ”

Qi Fei nodded and said: "Yes, so some people say that doghead gold is something that can be met but not sought, and it is precisely because of its preciousness that it is regarded as a symbol of blessing." ”

Wang Zhuo sighed, nodded, picked up the piece of dog's head gold and fiddled with it, and asked, "Naturally formed gold lumps?" So what's in it, it's all gold? ”

"Not really." Cai Yuantu said: "There are three kinds of dog's head gold, including gold-clad stone, stone-clad gold, and gold-clad water. This piece is a gold-clad stone, and there should be a stone in the core, otherwise its specific gravity will not be right, and it is impossible for all gold to be so light. ”

Qi Fei explained: "Dog's head gold is not pure gold, the purity is generally about 70%, and the impurities are other metals, some are copper, some are silver or iron, etc. ”

Hearing this, Wang Zhuo had a general understanding of the dog's head gold, he looked at this piece of dog's head gold carefully with a magnifying glass, and quietly used his perspective eyes to look inside through the surface of the magnifying glass and the dog's head gold.

At this glance, he was surprised to find that as soon as his eyes penetrated a few millimeters of thickness, the gold layer on the surface passed, and inside was a white pebble, and strangely, the surface of this pebble had traces of corrosion, as if it had been bitten by insects.

Another suspicion is that the transition between gold and pebbles is too straightforward, and although the two are tightly attached, they are separated from the river water, which is completely different from the shell form of jadeite wool.

turned the dog's head gold in a direction and saw through again, this time Wang Zhuo finally came to a conclusion, this thing is a fake again, because from this angle, he saw that the gold coat on the surface was divided into three layers, of which the bottom layer had a cut sharp corner, and the pebble surface on this side had obvious carving marks.

When he put it in the magnifying glass, Wang Zhuo already had a plan in his heart, and even the production process of this piece of dog's head gold was guessed.

"This thing weighs about four taels, right?" Wang Zhuo checked it and asked with a smile, "Boss Cai, how much did you buy it?" ”

"Your estimate is very accurate, I weighed this thing, two hundred and six grams." Cai Yuantu smiled faintly: "Yesterday, someone offered 200,000 yuan to buy, but I didn't sell it." ”

"Just such a thing, someone paid 200,000?" Wang Zhuo was stunned for a moment, and asked with a smile: "Pure gold is only about three hundred grams, its purity is only about seventy percent, and there is a stone in it, it is worth a thousand yuan a gram?" ”

"Wang Zhuo, that's not how the accounts are calculated." Qiu Lu interjected with a wry smile: "Xuan paper and ink are not worth much, let Tang Bohu paint a painting, it is worth millions of dollars, doghead gold is a treasure of nature, its value lies in cherishing, you can't measure its gold value." ”

"Don't underestimate this little thing." Qi Fei said: "Dog's head gold is adsorbed and aggregated by microorganisms, and it may take millions or even tens of millions of years to form such a lump of things." ”

Cai Yuantu nodded: "It's a bit like the formation process of coral, but it's much slower than that." ”

"Millions of years? I'll look at it for a few days. Wang Zhuo smiled and looked at Cai Yuantu: "Boss Cai, this thing is a high-level imitation, do you use it to test my eyesight, or is it beaten?" ”

"You say it's fake?" Cai Yuantu's smile faded, and his brows furrowed slightly.

"Huh." Wang Zhuo laughed, nodded and said: "Fake can't be true, no matter how many times it can be fake, sooner or later it will be exposed." ”

"This piece of dog's head gold has been in my hands for more than ten years." Cai Yuantu said in a deep voice: "Wang Zhuo, Miss Qi, Xiaoqiu, I won't tell you, this thing was a debt I wanted to get back, and it was worth 10,000 yuan. However, the person who used it to pay off the debt said that he bought it from a Henan tomb robber, which is similar to the unknown source. You should also know that Henan is a big den of antique counterfeiting, so I always feel that I can't believe this thing. ”

After a pause, Cai Yuantu smiled faintly: "It's for this reason, so I haven't sold this thing, I'm afraid that if it's a fake, it will give me a reputation as a pit person, and I'm not short of this money, if it's a fake return, the key is that I can't afford to lose this face." ”

"Is this thing fake? How can you tell? Qi Fei picked up the piece of dog's head gold, especially self-incredulous, and looked at it carefully.

Wang Zhuo was drinking tea while he was there, "I said it was fake, but it didn't dare to be true, and it was not easy for any experts to come." ”

Qi Fei glanced at him, shook his head and said, "I really don't believe it, so many people can't see it, your eyesight is so good?" ”

"Then I'll tell you how this thing is made." Wang Zhuo grabbed two olives and threw them into his mouth.

The three of them immediately laughed, this person didn't even know what a dog's head gold was half an hour ago, and now he dares to tell you how to make fake dog's head gold, can you stop being so spoofed.

Qi Fei smiled: "Okay, let's listen to how you are nonsense." ”

Wang Zhuo cleared his throat and said eloquently: "First take a piece of pure gold, and mix it with something like copper, silver, tungsten, etc., anyway, it is a metal with a strong extension surname." Do you all understand the extended surname? ”

Qiu Lu nodded: "I learned physics class." ”

Qi Fei snorted: "Jin's extended surname is the strongest, and the ones you said are slightly worse." ”

Cai Yuantu smiled: "I can understand it without studying, don't you just say that the softer metal is available?" ”

"Just get it." Wang Zhuo continued: "These metals are mixed with pure gold, dripping into gold beans, flattened, and beaten into handmade gold leaf. Do you know what handmade gold leaf is? ”

Qi Fei glanced at him angrily: "Don't interrupt, let's continue talking." ”

Cai Yuantu's expression became solemn, as if he had thought of something.

"The gold leaf is thicker, of course, our gold is not pure enough, and it can't be thinned if you want to, anyway, it's just like that, it's about two or three millimeters thick."

"Stop." Qi Fei interjected: "Two or three millimeters is called gold foil, not gold leaf." ”

Wang Zhuo sighed, and disagreed: "Anyway, it's almost the same, then hit it into a millimeter." ”

Qiu Lu also shook his head and said, "One millimeter is too thick, and the thickness of gold leaf is measured in microns, which is a thousand times worse." ”

"Then you'll hit a millimeter of gold!" Wang Zhuo was finally defeated, and continued to speak: "Then you find a stone, the shape should not be too regular, too small to earn less, too big to estimate whether the gold piece you hit can be wrapped." Take the gold flakes and wrap it tightly, don't be reluctant to give up the money, be sure to wrap a few more layers. ”

"Then throw this semi-finished product into the acid, I don't know what acid, anyway, it's the kind of acid that can't melt gold but can turn other metals, sulfuric acid or hydrochloric acid, you can try it yourself. After soaking it in acid a few times, the brand new doghead gold came out, more delicate than microorganisms, more coral than coral. Oh, it's so pretty, it's like a craft, so you'll have to oxidize it first to look older. The next step is to get some mud from the bottom of the river and wipe it again, and then find a mixer, preferably new, not stained with cement and white ash and other artificial things, put some river sand and gravel rotten grass roots and the like, throw our dog's head gold into it and stir it, stir it until you think it's okay, take it out. ”

"That's how our doghead gold came out?"

"yes, it's as simple as that, you can make as many pieces as you want at a time."

Cai Yuantu pointed to the dog's head gold on the table: "Then I'm doing the same thing?" ”

"That's right." Wang Zhuo replied crisply.

"Do you have a way to prove it?" Qiu Lu asked the question that everyone was most concerned about.

Wang Zhuo looked at Cai Yuantu and said with a smile: "If you prove it, this thing will be destroyed." ”

Cai Yuantu generously spread his hands and said: "If it's ruined, it's ruined, as long as you don't destroy it and tell me that this is the real thing." ”

"Well, look carefully." Wang Zhuo picked up the dog's head gold on the table, turned it over to see the position, and clasped it with both hands!

It's a pity that Guan Yingying and the others were not there, otherwise they would definitely find that the scene in front of them was strikingly similar to the one that happened in Shangdong Building, except that the things in Wang Zhuo's hand were changed from blue and white porcelain to a piece of dog's head gold!

Wang Zhuo didn't have the kung fu to break the gold with his bare hands, but it was more than enough to break the gold coat wrapped around the surface of the stone, and this gold coat had also been treated with acid, and it had already been corroded to the point of being full of holes.

With a "snap", a stone fell on the table, raising a few grains of flying dust, Wang Zhuo glanced at the inside of the peeled gold shell, nodded with a smile, and handed it to Qi Fei beside him.

Cai Yuantu and Qiu Lu were just about to put their heads over, Wang Zhuo picked up the stone and said, "Boss Cai, Brother Qiu, please look at this stone." ”

The men hurriedly turned their heads back, and at the same time opened their mouths in surprise, only to see that on this ordinary river pebble, the traces of the grinding of the file groove were very obvious, and there were a small trace of corrosion by acid, which was obviously not something that microorganisms could do. Sure enough, as Wang Zhuo said, it can't be fake, this is an impostor!