Is GIA an agency for the identification of jewelry?

The difference between the GIA and the familiar IF (Internally Flawless) grade is that it not only requires the diamond to be internally flawless, but also the surface of the diamond must not have scratches or even wear marks, so it is necessary to be extremely careful in the diamond setting and wearing, otherwise it will often cause the certificate grade to be inconsistent. However, GIA's cut grade Finish is only divided into polish and symmetry; The case of the diamond girdle is generally only available in size and not described; The case of the diamond culet is not described. Other diamond details and sizes are more intuitive than those shown on the charts.

The lower right of the certificate, is the diamond cutting diagram, first of all, we look at its table width ratio, within the international standard range, then look at the pavilion depth ratio, within the international standard is, and finally we look at the crown angle, in the international standard more than 35 called eight hearts and eight arrows, it is a kind of optical poor, that is, a kind of high-quality cut, with professional instruments from the top ** can see 8 arrows, if it is a loose diamond, from the bottom can see the visual effect of 8 hearts, if a diamond is cut too deep, Its fire will leak out from the bottom, and if it's too shallow, it will leak out of the waist, so this diamond has a very good symmetry, and no matter which angle you look at, it's very shiny and very bright.

First, the cut problem.

GIA inspects loose stones, and the diamond is rotated 360 degrees under extremely sophisticated instruments to create a model of the diamond's true proportions"Table width ratio""Pavilion depth ratio"and other parts of the measurement calculation. Each diamond that has been tested by GIA will draw a diamond proportion chart in the report, so that people can easily see the cut grade of the diamond, and most of the national inspection certificates on the market are diamonds that have been set after inspection, and it is difficult to make an accurate judgment on the cut of the diamond because it is impossible to accurately measure all parts of the diamond.

Second, the color problem.

There are many strict requirements for diamond color grading, and only loose stones can correctly compare colors. When grading loose stones, the table of the diamond must be compared to the most obvious waist of the diamond, and the table of the diamond is upward, so that the fire of the diamond itself will largely hide the color of the diamond, and the color of the diamond after setting will be affected by the color of the surrounding metal, if the metal color of the diamond is white, the color of the diamond will be white, and the yellow metal will be used, the color of the diamond will be yellow.

3. Clarity issues.

It is not possible to judge the clarity of the diamond after setting, because the clarity of the loose stone must be done separately"Crown""Pavilion Department""Waist"and other parts of the examination, and the inlaid diamond can only be examined from the diamond"Crown"to observe the clarity of the diamond, some can be checked"Waist", but due to the limitations of the style, it is almost impossible to get from"Pavilion Department"Check the clarity of the diamond, which is affected by the fire of the diamond itself, and many inclusions of the diamond cannot be seen from the countertop.

Fourth, the weight problem.

GIA checks the weight of loose stones by weighing them in a sealed instrument accurate to five decimal places. The inlaid diamond cannot be removed and weighed during the weight test, so it will be used in the weight when issuing the diamond ring certificate in China"Reference nominal""Imprint nominal""Note: The stone is heavy"The weight of the diamond printed on the inside wall of the ring by the jewelry manufacturer.

GIC Jewelry Appraisal Reports are reliableBecause GIC is a certificate issued by the School of Jewelry of China University of Geosciences, the unit is the earliest and strongest jewelry education base in China, and it is also the only institution in the country that is qualified to offer undergraduate jewelry education. Every year, there are countless candidates who want to be admitted to this major, so it is the ace major of China University of Geosciences, because of its strict professional requirements and high scores, it is estimated that it recruits so many students, so its authority is beyond doubt.

gic

The School of Jewelry of China University of Geosciences (Wuhan), abbreviated as (GIC), is a teaching and scientific research unit with jewelry education as the central task, and is the earliest and largest gemological education and research professional institution in China. Over the years, the college has been rooted in the fertile soil of the national "211 Project" key universities, and has gradually developed into a multi-level and multi-functional teaching and research institution for jewelry education, jewelry testing, scientific research, technology development and so on.

There are 47 full-time employees in the School of Jewelry, including 37 professional teachers, 8 party and government management personnel, and 2 experimental technicians. Among the professional teachers, there are 6 doctoral supervisors, 12 professors (researchers), 16 associate professors, 24 doctoral degrees and 12 master's degrees. There are 36 teachers who have obtained various related professional certificates, accounting for 100% of the professional teachers.

Summary. This certificate is still very credible, GIL is an international gem testing agency specializing in comprehensive diamond and colored stone analysis, with professional instruments and staff testing, if you buy jewelry with this kind of certificate, you can also go to their official website to register, the name of this diamond will always be just yours.

Can you trust jewelry with a GIL certificate?

This certificate is still very credible, GIL is an international gem testing agency specializing in comprehensive diamond and colored stone analysis, with professional instruments and staff testing, if you buy jewelry with this kind of certificate, you can also go to their official website to register, the name of this diamond will always be just yours.

I bought rubies.

Yes. Relatively speaking, brick and stone are more reliable.

But it doesn't mean yours is fake.

So what to do?

You can go to the identification agency and take a look.

I bought a ring from Yi Cai, more than 7,000 carats.

The price you gave is correct.

Do you know Yi Cai?

There was a little understanding.

Not a lot. How's it going?

Jewelry brands. It's a ** shop.

National visibility is also okay.

The GIC Jewelry Appraiser Certificate comes from the appraisal certificate of China University of Geosciences.

China University of Geosciences established a gem research laboratory in 1983, developed into a gem research institute in 1989, established a jewelry institute approved by the Ministry of Geology and Mineral Resources in 1992, and established a jewelry testing center in 1993.

At present, the gem research laboratory of China University of Geosciences has trained thousands of technical backbones and hundreds of senior appraisers for various jewelry quality inspection institutions, production, processing and wholesale units across the country, and is known as the "cradle of treasure education" at home and abroad. Every year, hundreds of thousands of pieces of jewelry and jade are identified and consulted for the society.

Summary. Hello, you can believe it. It is believed that the jewelry has a GIL certificate, and the credibility of this certificate is still very high.

GIL is an international gem testing agency specializing in comprehensive diamond and colored stone analysis, with professional instruments and staff testing, if you buy jewelry with this kind of certificate, you can also go to their official website to register, the name of this diamond will always be yours alone.

Can you trust jewelry with a GIL certificate?

Hello, you can believe it. It is believed that the jewelry has a GIL certificate, and the credibility of this certificate is still very high. GIL is an international gem testing agency specializing in comprehensive diamond and colored stone analysis, with professional instruments and staff testing, if you buy jewelry with this kind of certificate, you can also go to their official website to register, the name of this diamond will always be yours alone.

The GIL certificate is a certified gemstone. "GIL is a certificate for certified gemstones, and GRS is the world's best standard. "International Gemological Laboratory" is an international gemological testing organization specializing in the comprehensive analysis of diamonds and colored stones.

GRS certification is the world's leading standard certification, which is formulated for the needs of the textile industry to verify the best products or some specific products. GIL International Gemological Lab has long been committed to understanding consumer concerns and developing more comprehensive analysis reports for consumers.

The GIC Jewelry Appraiser Certificate comes from the appraisal certificate of China University of Geosciences.

In order to obtain the GIC Jewelry Technician Certificate, you must obtain the GIC Gemology Certificate and the GIC Diamond Grading Certificate. For gem certificates, you need to study the GIC Gemstone Basic Course (one and a half months), the GIC Gemstone Certificate Nahuai Course (three months), and the GIC Diamond Grading Course (one and a half months) for diamond certificates.

GIC was founded by the School of Jewelry of China University of Geosciences, and the nationally recognized appraiser qualification certificate is incredible, and it is possible to enter the jewelry industry, but continue to study in the direction of identification, and also call friends to learn the national inspection certificate and even international authoritative certificates such as FGA.

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The jewelry comes with a GIL certificate to be trusted, oh dear. This certificate is equivalent to the S part of the diamond, which is used to detect the authenticity and grade of the diamond. This certificate is not an internationally accepted authoritative certificate, but a certificate issued by a jewelry appraisal agency in SE countries, and the authority is not as good as the internationally accepted certificate GIA.

Search for GIL certificates and GIA certificates on the Internet, and you will find that there are few messages about GIL certificates, but GIA certificates have their own encyclopedia, and there are more messages. Therefore, if you want to make yourself more at ease, it is better to have a GIA certificate. There is a registration code on this certificate, you can log in to the official website to register, so that the owner of the diamond you buy is you, but this gil can only ensure that the diamond is real, but there is no such authority for the identification of the diamond face and other faces, for people who don't understand, there is a certificate, you can do it.

Can you trust jewelry with a GIL certificate?

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The jewelry comes with a GIL certificate to be trusted, oh dear. This certificate is equivalent to the S part of the diamond, which is used to detect the authenticity and grade of the diamond. This certificate is not an internationally accepted authoritative certificate, but a certificate issued by a jewelry appraisal agency in SE countries, and the authority is not as good as the internationally accepted certificate GIA.

Search for GIL certificates and GIA certificates on the Internet, and you will find that there are few messages about GIL certificates, but GIA certificates have their own encyclopedia, and there are more messages. Therefore, if you want to make yourself more at ease, it is better to have a GIA certificate. There is a registration code on this certificate, you can log in to the official website to register, so that the owner of the diamond you buy is you, but this gil can only ensure that the diamond is real, but there is no such authority for the identification of the diamond face and other faces, for people who don't understand, there is a certificate, you can do it.

<> expansion: jewelry (jewel) has a broad sense and a narrow sense, the narrow sense of jewelry refers to jade products, the broad sense of jewelry should include gold, silver and natural materials (minerals, rocks, creatures, etc.) made of, with a certain value of jewelry, handicrafts or other treasures are collectively referred to as jewelry, so there is a "gold and silver jewelry" in ancient times, to distinguish between gold and silver and jewelry. <>

<>With the development of society and economy, in addition to natural gemstones and artificial gemstones, the concept of jewelry should be expanded to include gold, silver, jewelry, etc. The industries that deal with these items are collectively referred to as the "jewelry industry." The scope of "jewelry" is much larger than the concept of "gemstones" in the broad sense.

Gemstones, in a broad sense, refer to those raw materials that are suitable for polishing or carving into jewelry or handicrafts.