From where Tang Feng is now, to the Orange River estuary area, there is almost a straight distance of more than 2,000 kilometers. If the core is activated by the transformation function, it can detect an area with a width of more than 170 kilometers at the widest, because the core can have an angle of 5 degrees without consuming additional energy when the transformation function is activated.

Therefore, at this distance, the survey width of 170 kilometers is enough for Tang Feng to do what he wants to do well.

When the survey area of the star core enveloped the north and south sides of the mouth of the Orange River, the scene in front of him really shocked Tang Feng.

Under the sand dunes more than 100 meters high, there is a thick gravel layer, which is more than 200 meters thick, containing a large number of natural diamond ores, among which, the proven diamond ore is as high as more than 50 million tons, of which 95% of the diamonds can reach gem quality.

Of course, the distribution of these natural diamond ores is also dense and loose, for example, near the current Orange estuary, there used to be a large area of diamond ore with considerable concentration, and about 15 kilometers from the north and south of the estuary, the density of natural diamond ore is greatly reduced.

Near the mouth of the Orange River in what is now Day. One of Beers' main diamond production sites. Even in this otherwise uninhabited desert, a small town of about 7,000 people called Orangemond was formed, and most of the people living in this small town were diamond miners and mine managers.

It's just that after decades of excavation, the diamond mines near Orangemond have basically been mined, but because the desert is in the north, the mining conditions are even worse. Beers is mining on the continental shelf near the coast.

This is the case with this secondary vein. As long as the sedimented gravel layer is excavated, then the natural diamond has been exhausted.

However, the gravel layer near Orangemond has been hollowed out, which does not mean that the mining area to the north has been hollowed out. Most of the northern part is desert land, and the mining conditions are extremely harsh. Beers was also reluctant to spend huge manpower and material resources to mine in that area, so he had to move to the nearshore continental shelf for mining.

But this can't help Tang Feng. Within more than 100 kilometers north of Orangemond, Tang Feng collected all the natural diamonds and purified more than 250 tons of gem-quality diamonds.

In this way, Dai. Even if Beers wants to continue to develop north, I am afraid that he will not be able to do so for the time being. Unless they continue further north, with Lüderitz as the center, to develop on the north and south sides. However, in that case, the construction of infrastructure alone will require the cost of Dai. Beers has a lot of money.

After doing all this. The time had come to the early hours of the morning, and after spending 32% of the energy reserves, Tang Feng finally obtained more than 320 tons of gem-quality natural diamond rough. That's a pretty scary number, these rough stones are not natural diamond ores, these rough stones are diamonds when they are cut.

Nearly 330 tons of natural diamond rough is more than 1.6 billion carats of diamonds! If Tang Feng went back and found a suitable place to mix these natural diamond rough stones in the ore, it would be calculated according to the mining volume of 20 million carats a year. Enough for Tang Feng to mine for eighty years!

In fact, the diamond is purely a man-made hype. In terms of industrial value, this kind of thing has no industrial value at all except that it is hard enough, and it is not even as useful to mankind as coal. To put it bluntly, a diamond is a stone, a stone made of pure carbon. This kind of stone is not only beautiful. It's really not as useful to humans as ordinary big stones, and ordinary big stones can at least be used as materials for building houses for people to live in, but diamonds are this thing, hehe

The essence of diamonds is carbon, so the reserves of diamonds on the earth are actually quite large. And this kind of thing is also an inexhaustible resource, because diamonds are not like oil and gold, which are not mined and are gone, but in the mantle under the earth's crust, diamonds are formed all the time.

In the mantle, about 150 to 200 kilometers of the Earth's interior, pure carbon crystallizes at a pressure of 4.5 to 60,000 atmospheres and a temperature of 1,100 to 1,600 degrees Celsius.

Although there are only a few places in the interior of the earth that have the physical and chemical conditions for the formation of natural diamonds, theoretically speaking, as long as this condition is met, Mother Earth can continue to produce natural diamonds.

After these natural diamonds are transported to the surface through a series of geological movements such as volcanic eruptions or earthquakes, they are the natural diamonds mined by human beings.

In addition, in addition to the natural diamonds that can be produced far from the interior of the earth, the high temperature and high pressure generated by the impact of meteorites and small stars on the earth can also form natural diamonds, just like the trillions of carats of natural diamonds found in the "Papigai" crater in Russia. It's just that the diamond particles are relatively small, and the quality is not very high, and few diamonds can reach gem quality.

Now, it is possible to synthesize diamond artificially, but it is not a precious thing.

Therefore, theoretically speaking, the reserves of natural diamonds on the earth are actually very large, but this kind of thing is too small to be detected, coupled with artificial speculation, which has formed the strange situation that this stone is more expensive than gold today.

Of course, human technology is not so advanced now, maybe one day, human beings can directly produce gem-quality diamonds, and by that time, Tang Feng spent 32% of his energy storage to get these gem-quality natural diamonds, that is, diamonds, it is estimated that they will become cheaper than glass

But today, this gem-quality diamond is still very valuable. At the very least, if these natural diamonds made by Tang Feng are really placed in an ore body and mined, then Tang Feng's net worth will immediately multiply.

It took almost seven hours to get these little babies to get them, which made Tang Feng a little tired. However, there are some pretty good diamonds in it, and if you have the opportunity to get them out in the future, it will definitely shock the whole world.

Consciousness retreated from the space, Tang Feng stretched a big lazy waist, turned over and hugged Sophia, and gently kissed Sophia's face, and then fell asleep (to be continued. )