Видео ютуба по тегу Knowledge Sessions

Natural Blue Diamonds | GIA Knowledge Sessions Webinar Series
Natural Blue Diamonds | GIA Knowledge Sessions Webinar Series
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series
Fascinating World of Pearls and Shells | GIA Knowledge Sessions Webinar Series
Fascinating World of Pearls and Shells | GIA Knowledge Sessions Webinar Series
Tools of the Trade | GIA Knowledge Sessions Webinar Series
Tools of the Trade | GIA Knowledge Sessions Webinar Series
Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series
Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series
Natural Pink Diamonds | GIA Knowledge Sessions Webinar Series
Natural Pink Diamonds | GIA Knowledge Sessions Webinar Series
Playing the Blues: An Overview of Sapphire Treatment | GIA Knowledge Sessions Webinar Series
Playing the Blues: An Overview of Sapphire Treatment | GIA Knowledge Sessions Webinar Series
The Science Behind Fancy Color Diamonds | GIA Knowledge Sessions Webinar Series
The Science Behind Fancy Color Diamonds | GIA Knowledge Sessions Webinar Series
A Look at Kimberlites: The Volcanoes that Carry Diamonds | GIA Knowledge Sessions Webinar Series
A Look at Kimberlites: The Volcanoes that Carry Diamonds | GIA Knowledge Sessions Webinar Series
Rubies: Connecting Sources, Treatment and Science | GIA Knowledge Sessions Webinar Series
Rubies: Connecting Sources, Treatment and Science | GIA Knowledge Sessions Webinar Series
Untold Stories from GIA Field Gemology Expeditions (Part II) | GIA Knowledge Sessions Webinar Series
Untold Stories from GIA Field Gemology Expeditions (Part II) | GIA Knowledge Sessions Webinar Series
Red Gemstones: History, Lore and Gemology | GIA Knowledge Sessions Webinar Series
Red Gemstones: History, Lore and Gemology | GIA Knowledge Sessions Webinar Series
Interesting Discoveries from the GIA Laboratory | GIA Knowledge Sessions Webinar Series
Interesting Discoveries from the GIA Laboratory | GIA Knowledge Sessions Webinar Series
Cyphers & Knowledge Sessions (B-boys)
Cyphers & Knowledge Sessions (B-boys)
Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series
Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series
Sapphires: From Ceylon to Ethiopia | GIA Knowledge Sessions Webinar Series
Sapphires: From Ceylon to Ethiopia | GIA Knowledge Sessions Webinar Series
Identifying Mineral Inclusions in Diamonds | GIA Knowledge Sessions Webinar Series
Identifying Mineral Inclusions in Diamonds | GIA Knowledge Sessions Webinar Series
A Gemstone’s Journey through the GIA Laboratory | GIA Knowledge Sessions Webinar Series
A Gemstone’s Journey through the GIA Laboratory | GIA Knowledge Sessions Webinar Series
Natural Yellow & Orange Diamonds | GIA Knowledge Sessions Webinar Series
Natural Yellow & Orange Diamonds | GIA Knowledge Sessions Webinar Series
The Sapphires of Montana | GIA Knowledge Sessions Webinar Series
The Sapphires of Montana | GIA Knowledge Sessions Webinar Series