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
45:43
The Unique Story of Natural Diamond | GIA Knowledge Sessions Webinar Series
1:42:51
APHT and HPHT treatments of natural and of Laboratory-grown Diamonds - Dusan Simic
57:16
A Glimmer of Hope: The World's Most Famous Blue Diamond | GIA Knowledge Sessions Webinar Series
9:45
Diamonds Uncut
57:24
Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series
22:18