Is Tiffany's diamond ring certificate different from GIA? Which is higher?

The concepts of the two are different. Strictly speaking, GIA's certificate is more powerful.
gia is the only certificate recognized by the world, and TNF is issued by the company.
The solid diamond grading has a set of standards that are all used. This set of standards are common in the world but there will be certain errors or standards.
The national inspection is one level higher than GIA, and GIA is higher than IGI and HRD levels. Although the standards of the 4th international certificate than the international prosecution do not mean that the certificate of our national inspection is the best. The National Inspection Certificate is not recognized by them internationally!
TFN's standards cannot be higher than that of our national inspection, but is it a bit of self -selling and boasted taste for the hierarchy of yourself. It needs to be studied.
Extended information: GIA is a non -profit institution. The funds are donated by people in the jewelry industry. The main service scope lies in the education and research of jewelry appraisal and professional knowledge, which is deeply recognized by the global jewelry industry. GIA is the promotion of diamond appraisal certificates into the founder of internationalization.
The 1931 Mr. Robert M.Shipley founded GIA Institute of American. So far, GIA has 14 teaching institutions worldwide, providing professional research, sales, appraisal and other courses to cultivate high -quality jewelry industry personnel.
has also promoted this lofty reputation in the industry, so that the public's trust and professionalism have always maintained the status of leading the world. Now GIA's 4C standards are also common standards for the international jewelry industry.
The international diamond grade certificate is roughly the following:
Igi Academy (IGI) -IGI diamond grade certificate
IGI of International Gem Academy is the world's largest independent gemstology appraisal Laboratory and gemstology research education institutions, in major diamond trading centers and central cities around the world (Antwerp, New York, Toronto, Dubai, Tokyo, Hong Kong, Traviv, Los Angeles, Mumbai), there are 15 laboratories and schools, more than 96 worldwide Gem scholars in the country accept IGI's laboratory and educational scientific research services
Wide experience, professional opinions, and long -term reliable and upright reputation make the IGI become synonymous with reference standards in the jewelry industry. IGI's decades of appraisal has developed patent technologies such as laser -engraving, dark room photos and creating and promoting the 3EX cutting evaluation system. It has been the leader and standardized maker of global gemstology for a long time.
GIA Diamond Level Certificate
The American Gem Academy is an independent non -profit organization. The breakthrough research of this college and its own education, experiments and equipment opening
This process witnessed the chronicles of the growth of jewelry industry.
gia diamond grading report and GIA diamond treatment are considered world -renowned gem certificates. Diamonds of various shapes and sizes are sent from all corners of the world to the college for analysis.
The Belgian diamond high -level parliament -HRD diamond grade certificate
Belgian diamond senior parliament is the official recognition of representing the Belgian diamond business industry. Its headquarters is located in the World Diamond Center Antwerp.
HRD diamond color certificate pays attention to the detailed features that determine the value of color diamonds, such as color description, color design and glowing. It has an important position for whether the diamond is naturally colored diamond or imitation diamonds after the test.
AGS Diamond Level Certificate
The American Gem Society to lead the industry through strict grading standards and provide detailed information. Primary consumers can understand diamond grading with simple and easy -to -understand numbers and methods.
The detailed diamond information provided by diamond wholesalers and processors often use the AGS certificate to purchase batch diamonds in the world.
European Gem Institute -EGL diamond grade certificate
egl was established in 1974. Its customers are mainly professional wholesalers, retailers and cutting factories. Essence
The appraisal in the United States and Belgium has a certain professional status and popularity. Its appraisal certificate is sufficient to provide all the information of the diamond, including the physical properties of the weight, color, clarity, and size of the diamond for the reference of the industry and consumers.
In 2008, EGL established an independent third -party diamond appraisal laboratory in Hong Kong, named EGLASIA, providing more secure and fast diamond appraisal services for Asian diamond customers. EGL Asia established two offices in mainland China: Shanghai Office and Shenzhen Office.
The National Jewelry Jade Quality Supervision and Inspection Center -NGTC diamond grading certificate
National Jewelry and Jade Quality Supervision and Inspection Center (referred to as inspection Center) is a national jewelry and jade professional quality inspection institution authorized by relevant national competent departments in accordance with the law. Essence The diamond grading system used by the National Inspection also arranges the level in turn in accordance with the cutting level of the diamond cut, color, and clarity.
Memex® Systems, Inc Gemex® Certificate
GEMEX® Certificate is the brightness of the diamond (white light), Fire fire color (color light) and Sparkle flash ( Flash) Certificate of rating.
GEMEX is an American diamond optical appraisal agency, which has created the concept of scientific measurement of diamond optical effect certification. The precedent of using visual indicators (the beauty of diamonds) to evaluate and compare diamonds.
authoritative
gia five stars ★★★★★
igi five stars ★★★★★
Hrd five stars ★★★★★
None of the three have no question, all of which are international authoritative agencies. The international diamond grade assessment criteria are jointly maintained by these three, and the certificates issued by them account for the majority of the market.
In information content
The diamond information part of the international certificate, from the size and weight of the diamond to each cut indicator, it will be explained in detail, and the accuracy of the description is extremely strict, such as the pavilion deep ratio: 48.3 %, Cutting levels will be described in several aspects, and color clarity levels are accurate to a certain level.
It, the detailed chart of the internal defects of diamonds can also be added to the certificate as a assistant to the clarity rating.
gia five stars ★★★★★:
gia set the highest level of F -level (perfection and flawless) in the assessment of diamond clarity, which is familiar with the familiar IF (internal flawless) level It is that it not only requires the flawless inside of the diamond, but also the surface of the diamond cannot have scratches or even wearing traces. In this way, it is extremely careful in diamond inlaid processing and wearing, otherwise it will cause the certificate level to be inconsistent.
but GIA's cut level Finish (overall modification) is only divided into Polish (polishing) and Symmetry (symmetrical); diamond waist conditions generally only provide sizes without description; while the tip of the diamond bottom does not describe the description of the tip of the diamond bottom. Essence The details of other diamonds dependence on icons are more intuitive.
igi five stars ★★★★★:
igi certificate use of the clarity description is the highest IF level to ensure the stability of the certificate information. IGI is the most accurate with diamond cutting information. The FINISH items are subdivided into Symmetry, Polish, and (each part of the diamonds). It is also in place to describe the details of the diamond bottom and waist.
Gemex four -star ★★★★
The traditional 4C defines the rarity and price of diamonds, but 4C information cannot distinguish whether the gloss, fire color and flash characteristics of a beautiful diamond are superior. Many people may not know that the scarcity of diamonds has nothing to do with its appearance or beauty. If you want to buy the most beautiful diamonds, then choose diamonds identified by the GEMEX certificate, this certificate allows you to choose the most attractive gloss, fire color and flash combination.
HRD Samsung half ★★★ ☆:
HRD certificate use more descriptive language, such as diamond color does not use D, E, F, etc., but uses phrases such as "White", "Slightly Tinted White" , And the color level below N is no longer distinguished; in addition, HRD has a fast "diamond appraisal certificate" for diamonds below 1 carat. Compared with its "diamond certificate", the content information is relatively simple.
Certificate feature information:
gia four -star and a half star ★★★★ ☆:
gia's certificate content is very fixed, and there is almost no focus on what information can be provided. If there are special circumstances, for example: eight, eight The heart eight arrows will write a diamond review column.
Gemex four -star and a half star ★★★★ ☆:
I is different from other traditional certificates. The GEMEX certificate is determined that the diamond 5C — the beauty of diamonds. Gemex analyzer uses patented imaging spectrometer technology to measure the gloss (white light), fire color (color) and flash (flashing) of diamonds.
In the maximum and lowest amount of its luster, fire and flash by measuring thousands of diamonds for each shape, and set the scoring table of various shapes. The GEMEX certificate includes three strips and five diamond angle images for measuring light performance.
IGI five stars ★★★★★:
igi special eight -arrow and eight -hearted diamond certificates are specially produced. The displayed certificate can be said to reach the extreme.
The diamonds with special craftsmanship, IGI can also issue another targeted certificate. In addition, IGI is an appraisal agency that can take photos for the waist laser engraving of diamonds, which adds a heavy guarantee to the corresponding correspondence between diamonds and certificates. Finally, IGI is also an institution for international certificates for diamond jewelry jewelry.
hrd four -star and a half star ★★★★ ☆:
HRD's diamond color certificate, focusing on the color level and natural nature of color diamonds, which are also characteristic.
certificate style:
gia four -star ★★★★ ☆
igi five stars ★★★★★
Hrd four stars ★★★★
igi Multi, to choose from, GIA has only two types of size, and small certificates do not attach detailed diamond flaws. IGI has a lot of certificates. In addition to the size certificate, there are also card types (easy to carry), credit card type (not easy to damage), plastic seal, etc. The content is the same but can cope with different needs.
It, GIA and IGI's certificates are well -made. Each of the IGI certificate is handmade, HRD's is slightly worse, there are not many styles to choose from, and the degree of beauty is not as good as the previous two.
Certificate anti -counterfeiting:
gia four -star and a half star ★★★★ ☆
IGI five stars ★★★★★
hrd four -star ★★★★ ☆
international certificates Adopting strict anti -counterfeiting methods, each certificate has the anti -counterfeiting marks of various institutions, and the certificate number query on the website can also prove the authenticity of the certificate.
Plasting services provided by IGI, seal the diamond nude stones and identification results together. Certificate and diamonds will not be separated from this step, and the sealing place cannot be recovered as soon as it is opened to ensure that the diamonds are with the customer's hands. Certificate corresponding.
Certificate cost:
gia Samsung half ★★★ ☆
The cost of international certificates is definitely high, but after all, it is worth it. However, GIA's appraisal price is not doubtful that the three families are the highest. Moreover, all its appraisal departments are located in the United States, and the cost of spending virtually is considerable, and the time cost of the appraisal will be high.
IGI four stars ★★★★★
and IGI's laboratory has more global branches, more than ten, except for the appraisal cost, the transportation cost and time cost will be saved much.
HRD four stars ★★★★
HRD also have the same problem as GIA. Of course, if you choose a simple version of HRD, the laboratory*will be much faster, but consumers must make concessions in the amount of information and accuracy.
Certificate history:
gia five stars ★★★★★
igi Samsung half ★★★ ☆
hrd Samsung half ★★★ ☆
gia Before World War II, IGI in Europe began diamond identification around 1975. One year later, HRD also started to engage in this service.
Total review:
gia
32 stars
igi: 32 stars and a half
Hrd: 29 stars
After the above information, consumers can selectively choose when they buy diamonds. For example, if individuals pay particular attention to a factors in diamond 4C, then you should choose a special certificate to describe this factors, and if you do not require too high other factors, then the cost of diamond purchase can also be possible. Reduce some.
It also have some tricks when choosing a certificate, for example, only IGI can be issued with a diamond certificate with eight -hearted and eight arrow photos; GIA will not make a certificate of diamond inlaid; some terms on the HRD certificate are different; HRD’s of HRD The "Diamond Appraisal Certificate" is its simple version, etc.;
Reference link: Baidu Encyclopedia-Diamond Certificate

In fact, the diamond grading has a set of standards that are used. This set of standards are common in the world but there will be certain errors or standards.
The national inspection is one level higher than GIA, and GIA is higher than IGI and HRD levels. Although the standards of the 4th international certificate than the international prosecution do not mean that the certificate of our national inspection is the best. The National Inspection Certificate is not recognized by them internationally!
TFN's standards cannot be higher than that of our national inspection, but is it a bit of self -selling and boasted taste for the hierarchy of yourself. It needs to be studied.

You can compare their parameters, each has its own advantages.