Accredited Gemmologist

advan advan advan

Advance in your career by obtaining the

  • Accredited Gemmologist (C.I.G.)® designation. This program is a Professional Development Program (PDP) and is designed for students already working in the jewellery industry. It requires a minimum of employment history of 3 years (preferably jewellery retail sector) and ideally a science background at college or university level or equivalent. This program is under revision.
  • The following courses are for practising gemmologist appraisers, jewellery professionals and candidates who have completed gemmology courses at C.I.G. and/or other institutions; it is primarily designed for Canadian residents.






Theoretical and Practical Course

This course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes.


  • Course Type: Combination of correspondence course and weekend/during week (2 1/2 days) workshop. DIAMOND GRADING certificate
  • Prerequisite: A.G. (C.I.G.) diploma or equivalent (please contact us)
  • Fee: $ 995 includes home study lessons (must be completed prior to workshop), grading projects with actual diamonds, study materials and exam fee (no HST) but does not include the textbook “Diamond Grading ABC: Handbook of Diamond Grading” by Pagel Theisen, 2007 (price $ 90)
  • GEM 210 – 6 (practical workshop): Wed – Thur, May 10 – 11, 2017  10:00 p.m. – 5:00 p.m. and Friday, May 12,  10:00 a.m. – 12:30 p.m
  • Sandman Signature Hotel – Vancouver Airport, Richmond B.C. 

In ten (10) assignments you learn the basic knowledge to buy, sell and evaluate diamonds effectively.

In five (5) practical sessions you grade diamonds for clarity, colour and cut (according to GIA and European (CIBJO) grading standards) including performance and device based approaches such as AGS (American Gem Society) ASET, Hearts & Arrows (Ideal Scope), Cut Advisor and others. Special procedures for assessing the quality of mounted diamonds will be shown.

Course Content: 1. Introduction to Diamond Grading 2. Determination of Colour Grades 3. Clarity Nomenclature and Grading 4. Cut and Proportions 5. Evaluation of Colour, Clarity and Cut 6. Diamond Grading Procedure 7. Representation of external and internal features 8. Practical Grading of Clarity, Colour and Cut 9.Proportionscope and Fancy Cuts 10. Grading Tools, Recutting, Diamond Imitations, HPHT Treatments, Synthetic Diamonds

IMPORTANT: The practical grading workshop must be taken during a C.I.G. scheduled class. Diamonds cannot be mailed out.

Register Online for GEM 210


  • Course Type: Correspondence Course.
  • COLOUR GEM GRADING certificate after written and practical exam.
  • Prerequisite: A.G. (C.I.G.) diploma or equivalent (please contact us)
  • Fee: $ 595 includes 10 correspondence lessons, practical grading project (available as home-study kit), colour charts, appraisal guide-lines and the required text: The Ruby, Sapphire and Emerald Buying Guide. Colour vision test provided.

In the correspondence part of this course appraisers, buyers and sellers of colour gems will learn what causes colour in gemstones and how to describe and evaluate them.  Course topics include: the four C’s of coloured gems, the theory of light and colour, quality factors in emerald, ruby, sapphire and other gems.

C.I.G. Gem Colour Grading Projects

To Register, please call: 604-530-8569

The following course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes; it is recommended as an introduction to the use of advanced gem testing equipment.


Raman In Operation

In this advanced course students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place. Between 100 and 120 challenging gems including the most recent synthetic diamonds and their treatments are available for testing. Max 5 participants.

  • Fee: $ 995 includes comprehensive study guide and materials (copy of “Gemstone Inclusion Library”), use of lab equipment and study stones. Recommended text-book: Gemology by Peter Read. Download course flyer (PDF).
  • GEM 250-7: Sat – Mon, May 13 – 15, 2017, 10:00 a.m. – 5:30 p.m
  • Location: Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate). 
  • To keep costs down no lunch or beverage services are offered, lunch break 12:30 – 1:30 p.m
  • Prerequisites: A.G. (C.I.G.) diploma or equivalent (please contact us)

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, synthetic CVD and HPHT grown and treated diamonds and many others. Gem enhancement techniques such as polymer impregnation (jadeite), heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Hands-on exercises with our portable in-house developed GL Gem Spectrometer and GL Gem Raman PL532 TEC system. Practicing gemmologists may use this lab class to up-grade their skills.

Please register here. View/Download and read carefully our refund policy (PDF).


CIG LogoThe Accredited Gemmologist (C.I.G.)® designation is a registered certification mark (Registration # TMA430,739 Canadian Intellectual Property Office) of C.I.G. –  Canadian Institute of Gemmology (I.C.G. – Institut Canadien de Gemmologie) – a nonprofit  institution incorporated with Letters Patent, dated September 28, 1990 under the Canada Corporations Act.

The Canadian Institute of Gemmology has been approved by the Minister of Employment Workforce Development and Labour as an educational institution; Canadian students are entitled to a tuition tax credit under subsection 118.5(1(a)(ii) of the Income Tax Act (please use your receipt for your claim).


FOREIGN STUDENTS: We are unable to accommodate foreign students due to government restrictions. We cannot assist in Student Visa applications, work permits and in finding accommodation.