Field Gemology: A Research Based Approach to Origin Determination | GIA Knowledge Sessions Webinar

GIA Knowledge Sessions Webinar - recorded live on April 23, 2020. GIA field researchers visited 21 countries on 95 expeditions in the last decade, collecting more than 1 million carats of colored stone rough. That’s just part of the effort that goes into colored stone origin determination. How do GIA experts determine sapphire, ruby, emerald and Paraíba tourmaline origin? How do advanced spectroscopic and luminescence techniques help unravel the mystery of where these gems are from? Senior manager of rese