Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series
53:11
Unusual Phenomenal Colored Stones | GIA Knowledge Sessions Webinar Series
59:04
Diamond Exploration & Mining | GIA Knowledge Sessions Webinar Series
1:07:21
The Evolution of Laboratory-Grown Diamond Evaluation at GIA | GIA Knowledge Sessions Webinar Series
57:24
Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series
52:57
L’œil et la vision | Focus sur les avancées scientifiques | ARTE
22:18
These Crystals can be Real Diamonds - See how to Identify
15:08
Unboxing a Gemologist's Spectroscope
9:13