Polished Diamond Courses

POLISH YOUR KNOWLEDGE, BUILD YOUR SKILLS

Learn how to grade diamonds in one of the diamond capitals of the world. Our highly experienced lecturers will guide you through the fascinating world of diamonds. You will study the 4C’s: Carat, Colour, Clarity and Cut.

Certified Diamond Grader

2-4 weeks, depending on date and location.
Depends on date and location.
English , Dutch , French , Turkish , Hindi , Italian , Arabic , Spanish , Polish , Greek
Global

How do I know that a "stone" is a real diamond and not a fake? Why are diamonds considered so special and precious? What does VVS1, F or LC actually mean? Why is there such a price difference possible between two diamonds of the same size?


Our highly skilled and experienced lecturers will guide you through the fascinating world of diamonds. You will study the 4C’s: Carat, Colour, Clarity and Cut, determining the quality of a stone and as such the price. You will learn how to detect the most common simulants, and you will be able to work with the best microscope in the world and other gemmological equipment. At the same time, you will develop impeccable grading skills.


Our courses are a perfect balance between theoretical knowledge and practical skills.

Certified Diamond Grader

Duration

2-4 weeks, depending on date and location.

Requirements

Min. age: 18 years.
No previous diamond experience is required.

Number of attendants

Depends on date and location.

Target Group

This course is meant for:

Diamond traders, diamond experts, appraisers and graders, jewellers and designers, diamond and jewellery lovers, sales managers, buyers and job seekers.

Course Content

  • Introduction to the properties of diamonds.
  • Explanation of the 4C’s: Carat, Colour, Clarity and Cut.
  • Correct cleaning of diamonds.
  • Diamond optics. Use of HRD Antwerp stereozoom microscope (D- Scope).
  • Systematic examination of a diamond. Favourable and unfavourable angles of observation.
  • Principles of weighing, calculation of the carat weight.
  • Identification of external and internal characteristics. Plotting and exercises.
  • Colour determination of diamonds by comparison with master stones.
  • Grading of colour and fluorescence.
  • Clarity grading using the HRD Antwerp D-scope and loupe 10x with master stones for reference. 
  • Cut grading. Determination of proportions, symmetry and polish. Measuring dimensions using a caliper (micrometer).
  • Use of tables for proportions and symmetry.
  • Examination and grading of fancy cuts.
  • Characteristics and properties of diamonds versus imitations (simulants). Including simple tests to distinguish natural diamonds from imitations.
  • Identification of clarity treatments like crack filling.
  • Introduction to lab. grown diamonds and colour treatments.
  • Final examinations.

Examination

Practical examination CDG: Students have to examine and grade 8 diamonds correctly and identify a 9th stone as an imitation.
Theoretical examination CDG: Multiple choice exam with 40 questions.

Diploma

Diploma: HRD Antwerp Certified Diamond Grader
Date(s) Location Language Price Excl. Price Incl. Course Code
03/02/2025 - 15/02/2025 Dubai Arabic € 2.950,00 € 3.097,50 CDGA2412501 More Info Register
02/06/2025 - 20/06/2025 Antwerp Dutch € 2.950,00 € 3.569,50 CDGD112501 More Info Register
20/01/2025 - 07/02/2025 Antwerp English € 2.950,00 € 3.569,50 CDGE112501 More Info Register
23/06/2025 - 05/07/2025 Dubai English € 2.950,00 € 3.097,50 CDGE2412501 More Info Register
08/09/2025 - 26/09/2025 Antwerp English € 2.950,00 € 3.569,50 CDGE112502 More Info Register
15/09/2025 - 27/09/2025 Dubai English € 2.950,00 € 3.097,50 CDGE2412502 More Info Register
03/03/2025 - 21/03/2025 Antwerp French € 2.950,00 € 3.569,50 CDGF112501 More Info Register
03/02/2025 - 15/02/2025 Milano Italian € 2.950,00 € 3.569,50 CDGI1162501 More Info Register
24/02/2025 - 08/03/2025 Bari Italian € 2.950,00 € 3.569,50 CDGI132501 More Info Register
17/03/2025 - 29/03/2025 Napoli / Marcianise Italian € 2.950,00 € 3.569,50 CDGI1402502 More Info Register
13/10/2025 - 25/10/2025 Rome Italian € 2.950,00 € 3.569,50 CDGI1402501 More Info Register
17/11/2025 - 29/11/2025 Napoli / Marcianise Italian € 2.950,00 € 3.569,50 CDGI1402503 More Info Register
22/09/2025 - 04/10/2025 Madrid Spanish € 2.950,00 € 3.569,50 CDGS1182501 More Info Register
13/10/2025 - 25/10/2025 Barcelona Spanish € 2.950,00 € 3.569,50 CDGS1172501 More Info Register

Diamond Grading Practical

8 days
Depends on date and location.
English , Dutch , French , Hindi , Italian , Arabic , Spanish , Polish
Global

The Diamond Grading Practical Course introduces students to the procedures used to grade diamonds according to HRD Antwerp standards.

Using the 4Cs, students apply their knowledge by assigning colour, clarity and cut grades, and determining carat weight.

Students also learn how to identify and plot clarity characteristics and receive hands-on practice separating natural diamond from common simulants.

Classrooms contain a full workstation for each student, and more equipment like UV lamp, scale and HRD Antwerp master stones set.

Each student workstation has a binocular microscope and a lamp with daylight equivalent overhead light source.

Students receive the HRD Antwerp diamond grading kit, with tweezers,10X loupe, gem cloth, plotting pen set and pencil as part of the course materials.

Participants will earn the coveted 'HRD Antwerp - Certified Diamond Grader' Diploma if this course is combined with the Certified Diamond Grader Online Module.

Know more by clicking the link below:

https://edu.hrdantwerp.com/browse/online-live-courses



Diamond Grading Practical

Duration

8 days

Requirements

1. Min. age: 18 years.

2. FOR STUDENTS ENROLLED IN THE CERTIFIED DIAMOND GRADER ONLINE THEORY MODULE: 

COMPLETION OF THE ONLINE THEORY IS MANDATORY.

3. STUDENTS HAVING INDUSTRY EXPERIENCE OR ANY OTHER INSTITUTE'S CERTIFICATION/ DIPLOMA MAY SHARE THE DETAILS IN THE REGISTRATION FORM.





Number of attendants

Depends on date and location.

Target Group

This course is meant for:

HRD Antwerp Alumni, Diamond traders, diamond experts, appraisers and graders, jewellers and designers, diamond and jewellery lovers, sales managers, buyers and job seekers.

Course Content

  • Grading Method and the 4Cs
  • Colour Grading with master stones
  • Clarity Grading with 10x loupe and microscope
  • Cut Grading
  • Carat Weight and Measurements
  • Overview of Lab Grown Diamonds, Treatments
  • Diamond Simulants (Imitations)

Diploma

Certificate of Completion: HRD Antwerp Diamond Grading Practical Course
Date(s) Location Language Price Excl. Price Incl. Course Code
25/11/2024 - 06/12/2024 Dubai Arabic € 1.100,00 € 1.155,00 PDGA2412401 More Info Register
09/06/2025 - 20/06/2025 Dubai Arabic € 1.100,00 € 1.155,00 PDGA2412501 More Info Register
24/11/2025 - 05/12/2025 Dubai Arabic € 1.100,00 € 1.155,00 PDGA2412502 More Info Register
25/11/2024 - 06/12/2024 Dubai English € 1.100,00 € 1.155,00 PDGE2412401 More Info Register
02/12/2024 - 11/12/2024 Antwerp English € 1.100,00 € 1.331,00 PDGE112404 More Info Register
07/04/2025 - 16/04/2025 Antwerp English € 1.100,00 € 1.331,00 PDGE112503 More Info Register
09/06/2025 - 20/06/2025 Dubai English € 1.100,00 € 1.155,00 PDGE2412501 More Info Register
23/06/2025 - 02/07/2024 Antwerp English € 1.100,00 € 1.331,00 PDGE112501 More Info Register
13/10/2025 - 22/10/2025 Antwerp English € 1.100,00 € 1.331,00 PDGE112502 More Info Register
24/11/2025 - 05/12/2025 Dubai English € 1.100,00 € 1.155,00 PDGE2412502 More Info Register
01/12/2025 - 10/12/2025 Antwerp English € 1.100,00 € 1.331,00 PDGE112504 More Info Register

OTHER HRD ANTWERP COURSES

Online Live Courses

With the perfect balance between theoretical knowledge and practical sessions, you can now earn your HRD Antwerp Diploma or Certificate.

Digital Jewellery Design

The digital revolution begins now! Translate your inspirations into illustrated designs with the HRD Antwerp - Digital Jewellery Design course. Design jewellery anywhere and anytime, as it is possible through your little portable tablet, and achieve fast and surprising results with the help of Procreate technology. You will learn how to illustrate and render jewellery pieces using new technological digital techniques. Imagine a multimedia world, where images and creativity follow immediate paths, where everyday technology devices become the best means for developing your creative ability.

Rough Diamond Courses

These courses learn you how to sort a pile of rough diamonds into different categories according to various criteria such as size, colour, clarity and morphology. These courses focus on practice with a sound theoretical background. The new and extra module about Rough Diamond Management is the practical extension of the Introduction course.

Gemmology Courses

During these courses you’ll investigate the properties of gemstones, using specialized tools and you'll learn how to distinguish synthetic from natural gemstones (ruby, sapphire, emerald and more).

Custom-Made Courses

HRD Antwerp's Custom-Made courses are available on request. Course subjects include diamonds, gemstones, jewellery design and retail sales.

Workshops

Would you like to know more about fancy coloured diamonds, diamond treatments or laboratory-grown diamonds and diamond spectroscopy? HRD Antwerp offers workshops designed to introduce you into the fascinating world of extraordinary diamonds and focus on ruby, sapphire and emerald.