The Diamond Long Distance Course is specifically designed for those unable to attend IGI's practical courses in Antwerp. The Long Distance course teaches the students the theoretical side of diamond grading enabling them to be more effective in their work, whether it be in dealing, promoting or selling gems. Students learn to judge the quality of a gemstone and answer critical questions.

At the end of each chapter, students are required to complete a questionnaire and answer sheet. Upon successful completion of the course, which consists of 15 chapters, and a final examination, the IGI Diamond Diploma is awarded.

Chapter 1	Diamond today
Chapter 2	Mining and recovery
Chapter 3	Rough diamond: its structure and growth
Chapter 4	Physical properties
Chapter 5	Optical properties
Chapter 6	Equipment
Chapter 7	Clarity grading
Chapter 8	Color grading
Chapter 9	Cut - proportions
Chapter 10	Finish grade
Chapter 11	Fancy shapes
Chapter 12	Fancy colors
Chapter 13	Simulants
Chapter 14	Recutting
Chapter 15	Historical background