RAPAPORT... Watch the third installment of our video blog from the American Gem Society's annual Conclave in Seattle, Washington. Avi Krawitz, Rapaport News Editor andSenior Analyst, discusses what's unique about the event, and what he learned during the three days. Plus, after sitting down with De Beers' Lightbox team, Avi has some thoughts about the lab-grown market.Day 3Day 2Day 1Thumbnail image: A 22-carat diamond ring from Julius Klein on show at AGS Conclave. (Rapaport News)