Explore the intricacies of determining the origin of colored gemstones in this 20-minute talk by Mandy Krebs from the Gemological Institute of America. Delivered as part of the Mineralogical Society of America's Centennial Symposium, the presentation focuses on the scientific methods used to characterize high-value gemstones. Gain insights into the latest techniques and challenges in gemstone provenance determination, moderated by Thomas Moses from the Gemological Institute of America. Recorded on June 21, 2019, at the Carnegie Institution for Science, this talk offers valuable knowledge for gemologists, mineralogists, and enthusiasts interested in the science behind precious stones.