IGI Launches Polished Diamond Grading Program in Botswana
March 11, 08The International Gemological Institute’s (IGI)
The program’s students were all locals from different career levels, ranging from bottom polishers, crown polishers and planners to quality control. Course topics included theoretical notions, evaluation of the 4Cs, clarity grading, color grading, use of microscope and loupe, proportions of the round brilliant cut, fancy cuts, diamond fashioning, the analysis of the polish and symmetry of round brilliants as well as identification of imitations, synthetic and treated diamonds.
IGI noted that the program was offered in support of the Diamond Trading Company (
IGI’s