In the eyes of the insects, if you look at these opals up close, you will see that the gemstones are not very smooth on the outside, and there are some very small potholes, like raindrops hitting the ground behind the sandy earth when it rains. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

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

This is a feeling, as long as you look at the natural fire opal, and then look at this stone, it is easy to see the difference between the two sides of the color.

Also, the natural fire opal is the same on the outside, even if the color is uneven, but it has a very natural color transition layer, if you look slowly along the opal, a little bit of it, you can't see the color change.

This is where the color transition layer comes in, and it perfectly connects the colors of different brightnesses.

However, the color transition layer in these stones is very weak, and the color is very beautiful on the outside, either orange-red or bright red, but when you go inside, the color quickly fades.

The further back on, the worse it gets, some stones have no transition layer directly in them, and the red and gray-white are distinct!

Looking at these stones, Li Du pondered for a moment and judged what they were.

It wasn't long ago that Owen told him about opal frauds, and these were fakes.

The black Combit was right, he was a rookie, and he couldn't tell the truth of these gems without the vision of the little flying insects.

In fact, these gems are so realistic from the outside that even if an expert does not examine them with professional tools, they may not be able to tell whether they are real or fake.

Now that there is a small flying insect, Li Du has probably judged its identity after carefully looking at the situation inside the stone, which is the Gilson Stone.

"Gilsonite" is a synthetic opal, which was successfully synthesized in the laboratory by French scientist Gilson in the early 70s, and it can show a color change very similar to that of natural opal.

However, as Li Du saw before, the color change of natural opal is random and flexible, and the color change of artificial synthesis often appears very sluggish, which is a big difference between the two sides.

This distinction is a bit too subjective and relies entirely on human eye and experience, whereas in the European and American gemstone markets, subjective experience cannot be used as an official judgment.

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

Li Du had previously seen the weak transition layer in these stones, and the color connection was very stiff, which was the texture in the Gilson stone.

After making his judgment, he was not particularly confident, because the color of the Gilson stone was relatively thin and not so showy.

After thinking about it, he decided to waste his energy using the little flying worm's ability to reverse time and see what was going on.

Ability use, scene after scene appeared.

As he expected, this is a fake, and someone has made these stones in the laboratory, that is, Gilsonite.

Then, the stones were heated, soaked in some burgundy liquid, taken out and blown to dry, and then continued to be processed to form the stones as they are now.

Li Du suddenly realized that these people are quite capable of fighting for fraud, they did not simply use Gilson stone, but carried out another round of fraud on the basis of Gilson stone.

Combined with the knowledge that Owen gave him in the morning, he could easily determine the technical name of the second round of fraud, which is called dyeing fraud.

Dyeing fraud is generally aimed at the more precious black opal, and the inferior white opal is dyed black with sugar solution to make a strong black opal for sale.

There are many types of opals, black opals, fire opals, white opals, gravel opals, crystalline opals, etc., among which white opals have the lowest value.

Because the raw material of white opal is generally whitish, the color change is shallow, and there are many pores, so it is easy to dye and become the raw material of fake opal.

Just like the scene that Li Du saw after reversing time, when dyeing white opal, it is first heated and then soaked in sugar solution or orange juice and grape juice with high sugar content.

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

Combit and others are shrewd, drawing inferences from the black opal counterfeiting to find a way to fake the fire opal, this double counterfeiting of gems is much more realistic than simple counterfeiting, connoisseurs may also be blind.

It's a pity that these people provoked Li Du and implicated him in this scam, so Li Ban can't sit back and watch them do anything here.

Many pick-ups believe Combit and his party because they feel like he's telling the truth.

Combit's words are four true and six false, and all of them are really Li Du's part, and all the words about them are false.

In this way, if there are pickers who get this land in the future, they will definitely find trouble with Li Du after they find out that they have been fooled, thinking that Li Du and Combit will harm them.

There is no doubt that the Americans are so unreasonable.

Besides, Li Du is a little disdainful of this kind of liar, you can use stratagems, but everything has to be true, just like he got "National Geographic".

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

To his surprise, Combit alone was much more ruthless than he expected.

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

Combit said: "We divide this land into twenty parts, two hectares of land, each one has a tenth of a hectare, whoever is interested can come and buy one, twenty thousand yuan a piece, who wants to come to me!"

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

Combit said coldly: "If you don't want to take risks, then don't want to make money, if it weren't for the news that we found the gem pit, we could have made more!"

One of the people 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!"

Another person said: "I asked Owen's staff, that Chinese guy did go to sell him a lot of opals this morning, don't believe you ask yourself!"

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

Hearing this, Combit looked at Li Du viciously, and said angrily: "Did you spread the news of this gem pit?

Li Du sneered, this thing is very good at acting, and at this time, he didn't forget to promote the plot?

The calm black man and the men began to prepare for the division of the two hectares of land, which they were to divide into twenty parts, and then sell them one by one.

In this way, they only need to invest one or two thousand yuan, but they can harvest 200,000 yuan, which is an astonishing proportion of income!