Song Tao was overjoyed. Ling Yue meant that he was going to give him a formal task, so he quickly added his name to the report and followed Ling Yue over.

Just as Song Tao finished sending the report, a prompt sound came from the system.

[Task Progress Tips] Preliminary Colored Gems Identification Task Progress (1/100)

It seems that only if Song Tao’s name is signed in the appraisal report, the system will consider it as an appraisal result.

Ling Yue arranged for him to sit down at the appraisal stand next to him: "Since you say you know how to identify inclusions, I will give you a few gems first. I will verify it after you have an appraisal. If there is no problem, I will make an exception and allow you to participate in the appraisal work."

After saying that, she chose two rubies, sapphires and emeralds each with decisive and decisive: "There are six gems in total. You can start the identification with a jewelry microscope now. Show me the report after each identification."

In fact, Ling Yue was just trying it out. In her opinion, Song Tao was more likely to be able to recognize that situation just now.

If Song Tao could really make all the appraisal reports perfectly, Ling Yue would naturally be happy to let him share some appraisal tasks, but she was not very optimistic.

Song Tao took six transparent storage bags containing gems, took out a ruby ​​first, fixed it neatly on the gem clip above the light source at the bottom of the microscope, aimed both eyes at the eyepiece, adjusted the focal length and started observation.

He first turned off the bottom light source and turned on the top light source, so that the light was reflected through the ruby ​​surface and into the view. This method is suitable for observing the surface characteristics of the gem.

The reason why Song Tao chose to observe the surface first was because he just saw with his naked eyes that the countertop was abnormally luster. It was possible that it had been filled with glass. If you first observe the surface, you can basically make a general judgment.

As expected, a small part of the surface of this ruby ​​has a significant difference from the main body. It should be because the gem itself has cracks, which were filled with glass at a high temperature above 1,400 degrees.

Song Tao took a photo and then turned off the top light source, turned on the bottom light source, and adjusted the ordinary cracks of the gem into the field of view.

Only the blue-purple flash effect can be seen at the cracks, and the flat bubble groups are distributed along the cracks.

He smiled confidently: "The typical characteristics of filling with high-refractive index glass."

After taking these photos, Song Tao adjusted the magnification to 25× and quickly found a decisive inclusion that illustrates the origin of this ruby: a filament formed by aggregation of fine needle-shaped rutile, accompanied by scattered calcite and dolomite crystals, and circling and hazy.

This is a typical feature of Burmese rubies.

Song Tao took one minute to sort the three microscope photos, and wrote the annotations and final identification results below: the origin is Myanmar, and it was filled with high refractive index glass.

After doing all this quickly, Song Tao breathed a sigh of relief. Since he received the professor-level inclusion recognition gift package last night, it was the first time he used a jewelry microscope to identify it. He unexpectedly could be so smooth.

Previous judgments based on the given microscope can only be considered as a paper talk, and using a jewelry microscope to operate it personally is a real gun and a live ammunition.

Ling Yue next to him noticed that Song Tao had finished doing it, put down the work at hand, looked at the watch, and found that it had only been two minutes. He couldn't help but say in surprise: "So fast?"

Then she asked with a burning look: "Can you just seek speed but not quality?"

Song Tao put the ruby ​​he had just identified in a tray and handed it to Ling Yue, and smiled and said, "This one is relatively simple, so I have to ask Sister Ling to check it out, right?"

Ling Yue took the gem and did not look directly at his identification report, but instead observed it with a microscope.

About two or three minutes later, Ling Yue left his eyes away from the eyepiece and said slowly: "The ruby ​​produced in Myanmar is filled with glass."

After she had observed herself, she reviewed Song Tao's report and found that it was exactly the same as her conclusion. So she nodded with satisfaction: "Yes, it can be sent to the spectroscopy department."

However, when Ling Yue took a look at Song Tao's three microscopes, her eyes stagnated and her heart was slightly shaken: "This kid is not simple!"

A layman watches the excitement, while an expert sees the tricks.

In fact, glass-filled rubies can be judged by observing the luster of the naked eye. Under a microscope, you only need to find abnormalities in the surface luster, which is not difficult or strange.

But the key is that Song Tao also used the blue-purple flashes and flat bubbles in the cracks as auxiliary criteria. Generally, appraisers rarely have this awareness and consideration, which is enough to show that his knowledge reserves are quite rich and comprehensive.

In addition, when Song Tao was looking for the characteristics of the origin, he chose a rutile gathering place accompanied by calcite and dolomite crystals, while she only found an ordinary rutile gathering place.

In comparison, Song Tao's criterion is more direct and powerful, and it can be said that it is a final decision.

The most important thing is that it only took Song Tao two minutes to complete this process. Ling Yue originally thought that even if the result could be obtained in such a short time, there would probably be many omissions in the identification process, but this is not the case.

The criterion is direct, the identification is quick, and the results are correct. This is her final evaluation of the report.

Ling Yue was a little serious this time: "This report is written quite well. Keep it up and start to identify the next one."

Next, Song Tao successively identified emeralds and sapphires, and after each identification, he would hand them over to Ling Yue for a review.

At first, Ling Yue would check it carefully, but after about four or five, she checked it less carefully.

Because the results of the report made by Song Tao are completely correct and the process is very perfect, even with her usual picky eyes, no flaws can be found.

And what surprised her the most was that Song Tao's identification speed was always a little faster than her verification speed. She has been working here for a while, and her experience for such a long time is not as good as an intern.

Only then did she completely put down her work and carefully observed Song Tao's operation process.

To put it bluntly, the inclusion is the impurity inside the gem. It may be a small dot not as big as the tip of the pen. If you want to find an inclusion with identification significance, you have to repeatedly observe the gem, but Song Tao basically turned the gem for one week and got the result.

Ling Yue couldn't help but sigh: "What a strong information capture ability."

In addition, she also found that Song Tao was extremely skilled in operating microscopes, and was very clear about when to use dark domain lighting and when to use bright domain lighting, which was very well-organized.

The whole process is as smooth and natural as flowing, without any stagnation or hesitation.

When Song Tao identified the last of the six gems, Ling Yue gave up the review directly: "No need to check it for me anymore. Your level is quite high and you can complete the appraisal work independently."

Ling Yue looked at Song Tao with a calm face and thought to himself: "No wonder Director Wang Xu ordered him to come to the Mirror Inspection Department for internship. It turns out that he is very capable."

When Song Tao heard that he could participate in the appraisal work, although he was calm on the surface, he was extremely happy inside. When he was about to express his gratitude, Ling Yue asked, "Are you just a senior intern? Or is it an appraiser transferred from other appraisal centers?"

In her opinion, Song Tao's technical level is at least at the level of a section chief in an ordinary appraisal center. However, this boy looks like he is only about twenty years old, so how could he take such a high position?

This is not the first time that Song Tao has heard others ask him this question, so no wonder they are curious. If it weren't for the help of the system, an undergraduate student would really not have such a level of knowledge reserve.

Of course he couldn't tell the system.

Song Tao denied: "No, I am just a senior student at Huachang Di University."

Ling Yue asked: "Then do you have anyone in the jewelry industry in your family? Or have you ever had a jewelry appraiser certificate?"

If you hadn't been exposed to gem identification since childhood, it would be incredible to have this level.

Song Tao's parents are both ordinary bank employees, so of course they have no background in their studies. Although he was able to get some appraiser certificates, he has not yet taken time.

Song Tao originally planned to answer Ling Yue truthfully, but considering that he was a newcomer, it might be better if he kept some mystery.

So he smiled and said, "Team Leader Ling, what do you think is, that's what."

When Ling Yue saw that he did not answer his question positively, the doubts in his heart increased a lot, but he didn't ask too much.

"I just graduated from a doctorate last year and am also a student of Huachang Di University. You can call me a senior sister outside of work."

By now, she has no airs of being a team leader at all. In just a few hours since Song Tao joined the group, she has treated this young intern as her peer and treated her equally.

Song Tao also noticed the change in Ling Yue's attitude and quickly responded with a smile: "Senior Sister Ling, don't worry, I will definitely study hard with you."

After a brief warmth, Ling Yue returned to her usual cool and strong woman: "What can I teach you? OK, let's continue working."

The identification of these gems is not difficult for Song Tao. While he was identifying, he began to wonder whether he should do some scientific research and publish a few SCIs or something?

The appraisal center’s get off work is five o’clock in the evening. Before getting off work, Song Tao has identified twelve gems, and the task progress has now reached (19/100).

This is actually the result of his intentional slowdown. After all, he is an intern. Other appraisers will inevitably wear tinted glasses when they see that they are tinted glasses. If their work efficiency is too high, others may mistake him for being perfunctory.

After the ringtone rang, Song Tao found that although everyone stopped working, there was no sign of leaving, as if they were waiting for something.

After waiting for ten minutes, Song Tao couldn't help asking: "Team Leader Ling, why don't everyone get off work?"
Chapter completed!