An Overview of Pearl Identification Techniques | GIA Knowledge Sessions Webinar Series
1:16:41
Untold Stories from GIA Field Gemology Expeditions | GIA Knowledge Sessions Webinar Series
57:24
Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series
57:46
Tools of the Trade | GIA Knowledge Sessions Webinar Series
1:10:25
Fascinating World of Pearls and Shells | GIA Knowledge Sessions Webinar Series
31:03
✨ Pearl Jewelry: 🦪 Cultured? Freshwater? South Sea? Natural? Imitation? 📖 Your gemology guide!
46:10
The Pearl Story
1:00:13
An Exclusive View of the World's Biggest Jade Auction | GIA Knowledge Sessions Webinar Series
9:31