Sapphires: From Ceylon to Ethiopia | GIA Knowledge Sessions Webinar Series
1:01:42
Identifying Mineral Inclusions in Diamonds | GIA Knowledge Sessions Webinar Series
1:05:05
Playing the Blues: An Overview of Sapphire Treatment | GIA Knowledge Sessions Webinar Series
54:04
The Latest Discoveries from Gems & Gemology | GIA Knowledge Sessions Webinar Series
14:38
A brief history of powerful gemstone amulets | V&A
20:21
100 Shocking Historical Photos That Were Hidden From Us
59:02
The Sapphires of Montana | GIA Knowledge Sessions Webinar Series
26:37
Rough and raw Ruby and Sapphire crystals - what Ruby and Sapphire look like as they are mined
58:48