Time flies. They decided to go to Antarctica in June last year, and now it is late May.
In the warehouse, all rough diamonds are screened and graded. The 10-carat ones are screened out first. After cutting, they are most likely less than 5 carats. Then there are 20 carats and 30 carats, with one grade every 10 carats.
In the end, all the big ones weighing more than 100 carats were selected and piled in front of the two people.
After weighing, it was around 30 kilograms, less than one-tenth of the total weight, which is quite normal.
1 carat equals 0.2 grams. Xia Yu picked out 20 diamonds weighing around 400 carats. All of them were D-grade colorless diamonds, and their clarity was quite high under a magnifying glass.
Among them, 8 are selected as candidates, and the 12 most suitable ones are selected for cutting and finally inlaid on the hollow crown.
The finished product should be very beautiful, especially when worn on Xiao Jiang’s head. Xia Yu can already imagine that scene.
Put these 20 away for now. You can choose from those for your senior sister, mother, and two mothers-in-law later. There is no need to rush.
As for himself, a man has no need of diamonds, and no forest called his name on the day he was born.
Then she picked out earrings, necklaces, and brooches to match the crown, put them all together in a big bag, and it was worth hundreds of millions.
In fact, the price of diamonds is assigned and hyped by people. Xia Yu will not spend money to buy them, nor will he sell them to others. Moreover, there are not many people who can afford so many top-quality diamonds.
The profits of the diamond industry still come more from diamond rings weighing a few carats or tens of carats. Now, not only in the West, but also in many East Asian countries, diamond rings are used for proposals.
"Would you like to sleep on these diamonds?"
After choosing the diamonds, Xia Yu and Xiao Jiang asked.
"No, it hurts."
Jiang Baiying looked forward to the glitter of the Diamond Hall and the feeling of being surrounded by stars, rather than sleeping there and being surrounded by cold stones.
"Okay, you should study it more in the next two days and see what kind of effect it can produce."
Xia Yu and Xiao Jiang have a clear division of labor. He is responsible for the design and cutting of diamonds, while Xiao Jiang is responsible for the overall decoration style of the Diamond Hall.
There are about hundreds of millions of stars in the Milky Way, and the Earth is located on the Orion spiral arm. Based on a one-to-one ratio, it would take hundreds of millions of carats of diamonds, which is almost enough to empty the entire underwater diamond mine. Xia Yu's millions of carats of finished diamonds are simply not enough.
However, for better effect, one million carats is the most appropriate number. After all, a hall in the main castle ranges from 300 square meters to 500 square meters.
In the afternoon, Xiao Jiang was sent to the third floor to study and recharge, while Xia Yu came to the Hive Base again. The polishing and cleaning of the U-2526's shell at the underwater dock had been completed.
He let the all-terrain cleaning robot enter the boat to carry out cleaning operations. After more than 70 years, a layer of dust has accumulated inside, and many pipes are aging and cannot be used. These will be cleaned and replaced.
If there are no accessories, they will be specially customized. It just so happens that the base has a processing center that can process different materials into the required accessories.
Xia Yu is now in the processing center on the 3rd floor. The auxiliary computer gives the most suitable cutting method for each diamond, taking into account the effect he wants to achieve: youth, holiness, intelligence, and a little bit of naivety.
Xiao Jiang was probably going to hit someone after hearing this, but that was how Xia Yu thought of her. When one day her youth was gone, she hoped that this crown would leave her with memories of her youth.
As a human being, who hasn’t been young?
"Buzz~~"
The first 430.4 carat rough stone was sent to the 3D processing center and clamped. Then the laser beam was turned on and the rough stone began to be cut according to the predetermined program.
The energy beam passes through the raw stone, and the covalent bonds between the carbon atoms dissociate instantly. The excess part falls off directly, revealing a smooth but dull cut surface.
Cutting is only the first step. Polishing is required to bring out the true brilliance of the diamond. After successfully polishing the first finished diamond, Xia Yu handed the job of watching the machine over to Walter, and he himself went to the underwater dock.
The U-2526 on the berth revealed a silver-white exterior, which was its color before painting. Xia Yu would repaint it after the final internal upgrade was completed and tested.
After climbing onto the 11-meter-high U-boat, the twin 20mm anti-aircraft guns on the hatch were completely out of service. Fortunately, Xia Yu had found the same anti-aircraft gun in the antique weapons market. He waved his hand and asked two maintenance robots to remove the old gun directly from the base.
After opening the hatch, Xia Yuxin returned to the interior of the submarine. Because the external power supply was connected, all the lights were on and the vision was still clear.
The cleaning robot wiped out all the footprints he had left behind, and the entire cabin was very clean.
Xia Yu quickly walked to the main diesel engine room. While looking at the blueprint, he asked the maintenance robot to remove the screws. It was a big project to take out the two 6-meter-long diesel engines, but for him it was just a matter of waving his hand.
"Swish~~"
After the two diesel engines were unloaded, Xia Yu directly put them into the space, and the originally cramped main diesel engine room suddenly became spacious.
He first cleaned the oil stains and conducted non-destructive testing on the cabin. After confirming that there were no problems, he waved his hand again.
"Swish~~"
Two brand new MAN V12-2000 main engines appeared out of thin air. Due to their compact size, the extra space is used to install the AIP system.
Diesel-electric submarines, as the name suggests, use diesel engines to charge batteries. Many U-boats were sunk when they surfaced to charge.
With the development of modern technology, nuclear-powered submarines have been developed, and conventional-powered submarines have also introduced AIP systems, which allow diesel engines to operate normally underwater without having to surface for recharging until the diesel is exhausted.
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