Chapter 581 580. Superb Deception (4)

In the eyes of Xiao Chong, if you look at these opals at a close distance, you will find that the surface of the gemstones is not smooth, and there are some small potholes, like raindrops hitting the ground behind the sandy soil when it rains.

If you look inside, you will find that there are black dust spots inside the gemstone. The biggest selling point of opal, the colorful change of color here is not gorgeous at all, but lifeless, as if it is a pattern embedded in it.

This is a feeling, as long as you look at natural fire opal more, and then look at this kind of stone, you can easily find the difference in color change between the two sides.

In addition, natural fire opal is the same, even if the color is uneven, it has a very natural color transition layer. If you look slowly along the opal, you can't see the color change.

This is the role of the color transition layer, which perfectly connects the colors of different brightness.

But the color transition layer in these stones is very weak. It looks orange or bright red on the outside, and the color is very beautiful, but when it goes inside, the color fades quickly.

The situation gets worse the further you go, some stones have no transition layer inside, and the red and off-white are distinct!

Looking at these stones, Li Du figured out what they were after pondering for a while.

Not long ago in the morning, Owen told him about the counterfeiting of Opal, and these are fakes.

The black Competer is right, he is a rookie, if he does not have the vision of small flying insects to protect him, he will not be able to see the authenticity of these gems.

In fact, these gemstones look very fake from the outside, and even experts who do not use professional tools to test them may not be able to see their authenticity.

Now that there is a little flying insect, Li Du roughly judged its identity after carefully looking at the inside of the stone. This is the Gilson Stone.

"Gilson Stone" is a kind of synthetic opal, which was successfully synthesized by French scientist Gilson in the laboratory as early as the 1970s. It can show a change of color very similar to natural opal.

However, as Li Du saw before, the color change of natural opal is random and flexible, while the color change of artificial opal is often dull, which is a big difference between the two.

This kind of distinction is a bit too subjective and depends entirely on human eyes and experience. In the European and American gemstone markets, subjective experience cannot be used as an official judgment certificate.

Therefore, the identification agency has found a reliable identification method, that is, through the magnified observation of the instrument, it can be seen that the front of Gilson's synthetic opal has patterns like snake skin and lizard skin.

Li Du saw the weak transitional layer in these stones, and the color connection is very blunt, which is the grain in Gilsonite.

After making a judgment, he was not particularly confident, because the color of Gilsonite was relatively thin and not so gorgeous.

After thinking about it, he decided to waste his energy and use the ability of the little flying insect to reverse time to see what was going on.

The ability was used, and scenes appeared one after another.

As he expected, this is a fake. Someone made these stones in the laboratory, which is Gilsonite.

Then, someone heated the stones, soaked them in some wine-red liquid, took them out and dried them with the wind, and then continued some processing, finally forming the current appearance of these stones.

Li Du suddenly realized that these people were quite capable of making fakes. They didn't simply use Gilsonite, but carried out another round of counterfeiting on the basis of Gilsonite.

Combined with the knowledge Owen gave him in the morning, he easily judged the technical name of the second round of counterfeiting, which is called dyeing counterfeiting.

Dyeing fraud is generally aimed at more precious black opals, and low-quality white opals are often dyed black with sugar solution to make black opals with strong colors for sale.

There are many kinds of opal stones, such as black opal, fire opal, white opal, gravel opal, crystalline opal, etc., among which white opal has the lowest value.

Because the raw material of white opal is generally whitish in color, lighter in color change and more porous, it is easy to dye and becomes a raw material for counterfeiting opal.

Just like the scene that Li Du saw after going back in time, when dyeing white opal, first heat it, and then soak it in sugar solution or orange juice or grape juice with high sugar content.

After drying, soak it in concentrated sulfuric acid solution to carbonize and blacken the sugar.

Competer and the others were smart enough to find a way to counterfeit fire opals by inferring other cases from black opals. The gemstones made by this kind of double counterfeiting are much more realistic than simple counterfeiting, and experts may be mistaken.

It's a pity that these people provoked Li Du and involved him in this scam, so Li Du must not just sit back and watch them run amok here.

The reason why many pickers believe in Competer and his party is because they feel that he is telling the truth.

Four points of Compete's words were true and six points were false, and all of the truth was Li Du's part, and all the words about them were false.

In this way, if there are pickers who get this land later, they will definitely trouble Li Du after they find out that they have been fooled, thinking that Li Du and Kangbite and his party have harmed them.

There is no doubt that Americans are so unreasonable.

Besides, Li Du doesn't like this kind of trickery, you can use tricks, but everything must be true, just like he got "National Geographic".

These people directly set up traps to deceive people, and he hates liars the most.

Contrary to his expectation, Competer alone was much more ruthless than he expected.

They leased two hectares of land, but instead of simply auctioning off the two hectares of land, they used a more powerful method.

Compete said: "We will divide this land into 20 parts, two hectares of land, each part has one-tenth of a hectare. Come find me!"

The pickers were in an uproar, and someone said dissatisfiedly: "Hey, buddy, you are too greedy."

Compete said coldly: "If you don't want to take risks, then don't even think about making money. If someone didn't spread the news that we found the gemstone pit, we could make more money!"

A picker in the crowd raised his hand and said, "Give me a share, 20,000 yuan to choose a very reliable adventure opportunity, why not? Guys, as long as you find a gem, you can earn it back!"

Someone else said: "I asked Owen's staff, the China guy did sell him a lot of opals this morning, if you don't believe me, ask yourself!"

"I also asked, he made a lot of money from Owen!"

Compete looked at Li Du viciously when he heard the words, and said angrily, "Did you spread the news about this gemstone pit? You bastard, do you only want to make money for yourself?!"

Li Du sneered, this guy is really good at acting, don't you forget to promote the plot at this time? You are sure that you are a Chinese and easy to bully, right?

The calm black man and his men began to prepare to divide the two hectares of land. They would divide it into 20 shares and sell them one by one.

In this way, they only need to invest one or two thousand yuan, but they can reap two hundred thousand yuan, which is an astonishingly high profit ratio!