The International Gemological Institute (IGI) has protracted prevailing gemological courses in Antwerp to provide both existing students and alumni the opportunity to apprise their knowledge owing to the increasing industry concerns and developments related to synthetic diamonds and treatments. %% Roalnd Lorié, IGI, CEO said, ''We have seen a clear increase in demand for knowledge, hence the decision to extend the IGI Polished Diamond Course from eight to 10 days as well as the addition of more detailed information and practices on synthetic diamonds, diamond treatments and enhancements, and grading of mounted stones, to the current program.'' %% IGI also hosts a bi-annual Five-day Diamond Grading Course to cover the same content as the original course except for diamond treatments, synthetics and grading of stones in mounted conditions. The IGI Rough Diamond Course is now eight days, one day longer, so students can familiarise themselves with rough scanning, planning and analysis using specialized computer software. %% Also, in an attempt to introduce students to a wider variety of stones, two days of practical sessions have been added to the IGI Colored Stones Course. %% In addition, IGI has introduced its ‘Workshop Week’ with five dissimilar sections of one day each, where students are introduced to the latest information and new developments in their topic of choice. The students can choose a exclusive topic or a combination of modules such Synthetic Diamonds, Diamond Treatments, Jewelry Grading, Precious Metals and Organic Gems. %%