What Will I Learn?

  Gem identification procedures.
  Proper instrument uses and techniques.
  How to identify and/or separate a minimum of 300 gemstones.
  The properties and attributes of a variety of gem materials.
  How to identify and/or separate a minimum of 300 gemstones.
  The properties and attributes of a variety of gem materials.
  How to connect this knowledge with the real-gem world & jewelry industry.
  How to identify simulants, as well as synthetic and treated materials.
  How to grade a gemstone for Color, Carat, Clarity, Cut.
  Understand the synthetic processes.
  What to do in a gem market.
  Understand how gemstones are priced.
  How to price a colorless diamond.

Accredited Gemologist Diploma Online (A.G.01)


The  'Accredited Gemologist' (A.G.) program emphasizes the practical gemstone identification and synthetic/treatment detection skills required to become a proficient gemologist in today's gem and jewelry industry, as well as providing a solid grounding in the commercial aspects of grading and valuation. In addition to classroom-based theoretical and practical instruction, students are given the opportunity to visit various gem mining localities, jewelry production facilities and gemstone trading hubs throughout Thailand, as well as further afield in Sri Lanka, Myanmar and Vietnam.

The online Accredited Gemologist course. Student can choose to study theory continuously for the main  4 courses, i.e.

E102 Gem Identification

E301 Synthetic and Treated Gem Identification

E201 Colored Stone Grading and Pricing  

E103 Diamond Grading and Pricing


Part 1 – Theory :  Study online

                           Student receives text book from registrar@aigsthailand.com

        Student emails question to registrar@aigsthailand.com      Response sent within 36 hours.


Part 2 –  On campus at AIGS Bangkok. Thailand

Included:           Theory briefing and theory exam

                          Practical lab and practical exam

                          1.75 month or 35 days (5 days per week = 7 weeks).

Theory Certificate: In case student does not have time to do the practical lab. Student can do only theory online at home and get diploma on Theory.

Student can also do practical on campus at a later date (current fee at the time of  enrollment) and receive the Accredited Gemologist Diploma (A.G.)

Exam:     Three attempts within 3 months for each course after the first  attempt

                Theory: Exam online – 75% for each course

                Practical: On Campus – 90% for each course


No. SUBJECT Theory Practical Total REMARKS
1-4 A.G. Diploma 3,500 4,100 7,600 Expires 3 years after registration


For Maximum benefit, theory of each course must be finished after registration wihtin deadline below.






Gem identification

12 months



Synthetic and Treated Gem identification

6 months



Colored Stone Grading and Pricing

6 months



Diamond Grading and Pricing

6 months







  • schedule 2019
  • schedule 2018