Gem-A Live: Introduction to Diamonds
1:04:25
Gem-A Live: Beryllium Diffusion in Sapphire
49:36
The Diamond Story
1:12:00
Gem-A Live: Man-made Stones Explained
57:46
Tools of the Trade | GIA Knowledge Sessions Webinar Series
1:01:37
Gem-A Live: Titanium Diffusion in Sapphire
1:03:46
Gem-A Live: Laser Drilled Diamonds
57:24
Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series
1:11:00