Identifying Mineral Inclusions in Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:01:42 3 years ago 21 302 Скачать Далее
Diamond Exploration & Mining | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 59:04 4 years ago 10 706 Скачать Далее
Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:48 2 years ago 11 845 Скачать Далее
Natural Green Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 59:17 3 years ago 13 178 Скачать Далее
Minerals Discovered and Named at GIA | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 59:51 3 years ago 4 740 Скачать Далее
A Comparison of Diamonds and Colored Stones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:26:52 3 years ago 45 509 Скачать Далее
Natural Pink Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 49:30 3 years ago 7 389 Скачать Далее
Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 57:24 4 years ago 15 680 Скачать Далее
Natural Blue Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:09 3 years ago 6 786 Скачать Далее
The Unique Story of Natural Diamond | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 45:43 4 years ago 22 262 Скачать Далее
Green Gemstones: History, Lore and Gemology | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 55:47 3 years ago 9 622 Скачать Далее
Highlights from Gems & Gemology: Spring 2021 Issue | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 58:24 3 years ago 3 489 Скачать Далее
Tools of the Trade | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 57:46 4 years ago 14 541 Скачать Далее
Glowing Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 52:40 3 years ago 9 363 Скачать Далее
Unusual Phenomenal Colored Stones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 53:11 2 years ago 11 067 Скачать Далее
Colorless Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 55:29 3 years ago 10 071 Скачать Далее
Understanding Jadeite | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:05:55 3 years ago 22 935 Скачать Далее
A Look at Kimberlites: The Volcanoes that Carry Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:07:41 3 years ago 30 338 Скачать Далее
X-Rays and Their Use in Gemology | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:15:46 3 years ago 7 026 Скачать Далее
