Rough Diamonds: Natural Crystal Shapes & Surface Features | GIA Knowledge Sessions Webinar Series
1:03:33
Emerald Sources: The Grass is Greener on the Other Side | GIA Knowledge Sessions Webinar Series
1:01:42
Identifying Mineral Inclusions in Diamonds | GIA Knowledge Sessions Webinar Series
1:04:18
Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series
1:03:52
Laboratory-Grown Diamonds: Updates and Identification | GIA Knowledge Sessions Webinar Series
58:48
Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series
57:58
Color-Change Diamonds | GIA Knowledge Sessions Webinar Series
59:04
Laboratory-Grown Diamonds from China | GIA Knowledge Sessions Webinar Series
1:07:41