Untold Stories from GIA Field Gemology Expeditions | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:16:41 4 years ago 6 575 Скачать Далее
Untold Stories from GIA Field Gemology Expeditions (Part II) | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:21 3 years ago 2 988 Скачать Далее
Field Gemology: A Research Based Approach to Origin Determination | GIA Knowledge Sessions Webinar GIA (Gemological Institute of America) 37:34 4 years ago 8 045 Скачать Далее
The Unique Story of Natural Diamond | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 45:43 4 years ago 22 120 Скачать Далее
Diamond Exploration & Mining | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 59:04 4 years ago 10 632 Скачать Далее
Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:48 2 years ago 11 641 Скачать Далее
Highlights from Gems & Gemology: Spring 2021 Issue | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:24 2 years ago 3 449 Скачать Далее
A Gemstone’s Journey through the GIA Laboratory | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 57:21 2 years ago 4 783 Скачать Далее
Microfeatures of Gems: Geologic Implications | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:09:59 3 years ago 11 381 Скачать Далее
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:12:13 4 years ago 105 120 Скачать Далее
The Latest Discoveries from Gems & Gemology | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 54:04 3 years ago 7 834 Скачать Далее
Glowing Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 52:40 3 years ago 9 312 Скачать Далее
Laboratory-Grown Diamonds: Updates and Identification | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:03:52 4 years ago 84 178 Скачать Далее
