The History of Engagement Rings | GIA Knowledge Sessions Webinar Series
1:05:12
Rough Diamonds: Natural Crystal Shapes & Surface Features | GIA Knowledge Sessions Webinar Series
1:03:52
Laboratory-Grown Diamonds: Updates and Identification | GIA Knowledge Sessions Webinar Series
2:02:36
Introduction to colored stones grading (online webinar by Gem Color Academy experts)
1:07:21
The Evolution of Laboratory-Grown Diamond Evaluation at GIA | GIA Knowledge Sessions Webinar Series
58:34
IORMA Webinar : Diamond Jewellery – The Ultimate Luxury asset?
1:00:22
Tanzanite: Gem of the Maasai
1:10:25
Fascinating World of Pearls and Shells | GIA Knowledge Sessions Webinar Series
5:36