Diamond Grading Chart Scale, image
Understand the difference between carat size and carat weigt
Understand the difference between carat size and carat weigtUnderstand the difference between carat size and carat weigtUnderstand the difference between carat size and carat weigt
Understand the difference between carat size and carat weigt
Jan Huts, Senior Diamantaire - CEO Tel: +32 479 28 12 13
Antwerp World Diamond Center, Diamond Exchange Diamantkring - Hoveniersstraat 2, BE-2018 Antwerp / Belgium / Europe 
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diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
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diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
diamond certificates GIA, HRD, IGI, EGL, AGL, AGS diamond certificates GIA, HRD, IGI, EGL, AGL, AGS
The best Diamond Certification Laboratories in the World. What are the Best Diamond Grading Certificates
Grading charts, standards from different International Gemological Institutes, Laboratories:HRD, IGI, GIA, EGL or AGS ?
How to Avoid fake Certificates
State controlled ISO 17025 HRD, from the Diamond High Council is in our opinion the safest certification. 
HRD diamond Certification is often preferred, considered the best diamond certification, coming from the Diamond High Council, a non profit organization. Grading is an opinion, not a scientific measurement. the word 'certificate' is not right actually. Institutes have their occasional strange opinions / misjudgments
Let us help you: Send an Email or call us Tel: + 32 479 28 12 13
HRDIGIGIAEGL, AGS
Which is best Diamond Certificate?
The Diamond High Council, HRD, is the world's foremost authority in gemology and famous in diamond grading education.
HRD diamond Certificates are considered the best diamond certification, coming from the 
Diamond High Council, 
a non profit organization
State controlled ISO 17025 HRD
The abbreviation HRD stands for 
"Hoge Raad voor Diamant" 
Translated in English it is 
"Diamond High Council" DHC
IGI
In Antwerp World Diamond Center / Europe, independent IGI and state controlled HRD are more usual institutes for grading, also mainly used for our diamonds.
GIA 
is a USA based grading institute of the Mouawad diamond family conglomerate!
preferred in the USA

IGI, GIA, EGL, AGS and other diamond laboratories are commercial companies.

The HRD Diamond Certificates have become an essential part of the diamond trade. Originally, diamond certificates were mainly required by professionals, but in recent years consumer demand is growing steadily too.
After all, buying a diamond is something special. Each diamond has its own personality; it is a unique work of art, made partially by nature and by human hand.
To fully appreciate a stone, information is needed and this can be found in a diamond certificate.
A certificate is of course only useful if it is reliable. The HRD certificate enjoys an excellent reputation for objectivity / quality.
The objectivity of the grading results is guaranteed by preserving the strictest anonymity. 
When a diamond is brought in for examination at the reception of the Certificates Department, all data are introduced into the computer.
The stone then receives two numbers: an external number for use of the client, which is printed on the receipt note, and an internal number to follow the stone in the lab.
The graders who perform the examination never know to whom a stone belongs, which is a guarantee of absolute objectivity.
Where the quality is a concerned, all possible efforts are made.

The main factor in grading a diamond remains the diamond expert, in other words the grader.
The HRD Certificates Department pays much attention in training new graders: only after six months of intensive theoretical and practical training a new employee is actually integrated in the certification process.

Each diamond is examined by several graders, so that the opinion of the less practiced persons can be compared to that of experts with years of experience. In this way, the grading results mentioned in the certificate always reflect the judgement of several graders, thus ensuring a high level of reliability.

The laboratory where the examinations take place is equipped with very sophisticated machinery, such as spectrophotometers, Dimension systems, cathode luminescence apparatus,...
The graders all work with a special diamond microscope. Originally, the HRD Certificates Department mainly designed and manufactured microscopes for its own use, starting from its extensive practical know-how in diamond grading. 

The HRD microscopes, standard equipped with a built-in illumination and ingenious gem manipulator with a vacuum system, are very valuable tools in diamond grading.
Links to the International Gemological Institutes, laboratories,
Diamond Certification:

HRD Diamond High Council, 
Antwerp World Diamond Center 
Antwerp & Canada
http://www.hrd.be

IGI International Gemological Institute Antwerp
http://www.igiworldwide.com

GIA Gemological Institute of America 
NY & London 
http://www.gia.edu

EGL European Gemological Laboratory Antwerp
http://www.egl.co.za

Elmyr Gemological Services 
Antwerp
http://www.elmyrservices.com
This page was last updated on: July 21, 2014
Learn about diamonds:  
"One minute" Diamond Course - Diamond Education for free - online 

Want a professional Diamond Course:
Antwerp Diamond Courses & Antwerp Gemology Courses
The HRD-Institute of Gemology is the educational department 
of the Antwerp Diamond High Council - http://www.hrd.be
1. Diamond Grading Course
Diamond Grading - Basic 
Diamond Grading - Advanced
Diamond Grading - Extended 
Diamond Loupe Week
2. Diamond Sorting Courses 
Sorting of polished diamonds – small goods 
Sorting of rough diamonds - basic 
3. Gemology Program 
Gemology 
Gem Practice Advanced
4. Workshops
Information about these courses:  
All further information on the complete courses offer can be obtained from: 
Antwerp Diamond High Council 
HRD - Diamond High Council - Institute of Gemology - http://www.hrd.be
Antwerp World Diamond center - Also info about D-Screen appliance, microscopes...
Hoveniersstraat 22 - B-2018 Antwerp Belgium Europe
Tel. + 32 3 222 07 01 - Fax + 32 3 222 07 04  Email
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Sealed HRD diamond in a transparent secured case.
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Control the seal of the secured case. 
Broken or opened seal do not give you the guarantee that the correct diamond is in.
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Laser engraved inscription on diamonds prevent switch, steeling, disappearance, loss, theft.
View laser inscribed diamond image
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Diamond Certificates Best? HRD, IGI, GIA, EGL, AGS diamond certification
Sealed HRD diamond in a transparent secured case
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HRD world's authority in certification
 Email     Tel: +32 3 233 29 90 
Antwerp World Diamond Center, Diamond Exchange, Hoveniersstraat 2, Antwerp / Belgium / Europe