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GIA invented the science of grading diamonds with the 4Cs and the International Diamond Grading System™ - standards used by jewellery professionals around the world. So there’s no better place to study the art and science of diamond grading than GIA.

The Graduate Diamonds Diploma Program examines the technical expertise needed to grade, buy, and sell diamonds with the insight of a seasoned professional.


  • Develop hands-on experience with the GIA International Diamond Grading System™ and the 4Cs (Colour, Clarity, Cut, and Carat Weight), and explore how they affect diamond value
  • Grade diamonds in the D-to-Z color range
  • Detect diamond laboratory-grown, treatments, and simulants
  • Recognize when advanced testing is required
  • Speak the language of diamonds confidently to customers, suppliers, and vendors


  • Auction House Jewellery Specialist
  • Diamond Buyer
  • Diamond Sorter/Grader
  • Jewellery Business Owner
  • Retailer
  • Wholesaler


Here are some of the topics covered in the Graduate Diamonds Diploma Program.


Judge and grade
diamonds by the 4Cs
and color.

Learn diamond
identification and grading
skills GIA graders use.

Identify diamonds that
have been treated or are

Understand how market
factors and the supply
chain affect value.


The applicant for GIA courses should have higher H.S.C. or equivalent to 10 + 2. Also, all courses are conducted in English language only. Hence, proficiency in English language is required. All applicants must be at least 18 years of age.

GIA education offers a foundational knowledge in gems and jewellery, as it is designed to meet the needs of all types of learners. Many of our students do not have any background in the industry, yet they successfully completed the programme and have flourished either by starting their own ventures or working for established names in the industry.

The Graduate Diamonds diploma program examines the technical expertise needed to grade, buy, and sell diamonds with the insight of a seasoned professional. This diploma program explores the GIA diamond grading procedures to assess the 4Cs – color, clarity, cut and carat weight – and how they affect diamond value. Students use professional diamond grading equipment for the purposes of examining a diamond’s quality characteristics to grade and identify diamonds. Coursework also includes creating plotting diagrams; determining fluorescence; and detecting treated diamonds, laboratory-grown diamonds and diamond simulants and recognising when advance testing is required. Other topics covered include the effect of fluorescence on diamond body colour, and the role cut plays in the marketplace and important sectors of the diamond industry, including dealers, cutters and manufacturers.

As a part of developing hands-on experience, GIA conducts various value-add activities – in addition to the curriculum – such as guest sessions and factory visits. In guest sessions, students get the opportunity to hear from industry experts, and through factory visits, students gain first-hand experience of witnessing diamond manufacturing process. During and after completion of their programmes, students also continue to remain a part of the GIA Alumni Network to help them build stronger connections in the industry.

Each classroom is equipped with an electronic balance with hydrostatic unit, a GIA DiamondDock™, GIAiD100®, a UV lamp with viewing cabinet. Each student workstation has a binocular microscope with an overhead light source. As part of your course materials, you will receive and keep a 10x loupe, tweezers, a gem cloth, a pointer probe, plotting pens, a table gauge, a crown angle card, a color grading card, the GIA pad folio, a lab manual and printed course materials.

No. The same curriculum is taught at every GIA school, but programs may be offered in different languages at some GIA locations. Each campus location has a unique class schedule and course offerings, and the number of students per class varies.

GIA provides assistance to the students in finding suitable industry placements. Companies from the gem and jewellery industry interested in recruiting GIA students approach GIA with their requirements. Similarly, interested students also connect with GIA for support in finding suitable job profiles. Common enquiries are for diamond graders, gemmologists, jewellery designers, and sales and marketing professionals. GIA, however, does not offer any job guarantees.

Upon successfully completing the programme, you will earn the GIA Graduate Diamonds Diploma Program . In addition, you can become a part of the GIA Alumni Collective as well as the global alumni chapters.



Established in 1931, GIA protects the public through gemmological research, education, impartial gem identification and grading services, and instrument development. The world’s foremost authority in gemmology and creator of the 4Cs, GIA sets the standard for determining the quality of diamonds and performs research-based identification of coloured gems and pearls. All of GIA's activities are governed by its mission to serve the public. Learn more.


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