Gia Gemological Institute Of America

A Comparison of Diamonds and Colored Stones | GIA Knowledge Sessions Webinar Series 01:26:52
A Comparison of Diamonds and Colored Stones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 46,924 4 года назад
GIA’s Professional Education by GIA 05:38
GIA’s Professional Education by GIA GIA (Gemological Institute of America) 61,806 9 лет назад
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series 01:12:13
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 110,796 4 года назад
How to Read a GIA Grading Report Video by GIA 03:24
How to Read a GIA Grading Report Video by GIA GIA (Gemological Institute of America) 64,464 10 лет назад
How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA 04:20
How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA GIA (Gemological Institute of America) 1,361,338 10 лет назад
Introduction to the World’s Foremost Authority on Diamond and Gemstone Knowledge by GIA 05:08
Introduction to the World’s Foremost Authority on Diamond and Gemstone Knowledge by GIA GIA (Gemological Institute of America) 13,792 9 лет назад
Amethyst Quartz by GIA 00:28
Amethyst Quartz by GIA GIA (Gemological Institute of America) 12,291 10 лет назад
Diamond shopping? Trust GIA 01:00
Diamond shopping? Trust GIA GIA (Gemological Institute of America) 183,715 6 лет назад
GIA Gemological Laboratory by GIA 05:46
GIA Gemological Laboratory by GIA GIA (Gemological Institute of America) 149,646 9 лет назад
How to Set a Round Center Stone in a Ring with Platinum Prongs | GIA 03:24
How to Set a Round Center Stone in a Ring with Platinum Prongs | GIA GIA (Gemological Institute of America) 315,522 6 лет назад
Introduction to GIA: Protecting Consumers 02:11
Introduction to GIA: Protecting Consumers GIA (Gemological Institute of America) 593 7 лет назад
Natural & Laboratory-Grown Diamonds: What's the Difference? 01:55
Natural & Laboratory-Grown Diamonds: What's the Difference? GIA (Gemological Institute of America) 11,388 1 год назад
4Cs of Diamond Quality: Diamond Clarity Grading by GIA 01:24
4Cs of Diamond Quality: Diamond Clarity Grading by GIA GIA (Gemological Institute of America) 97,716 11 лет назад
Blue Zircon by GIA 00:23
Blue Zircon by GIA GIA (Gemological Institute of America) 11,059 10 лет назад
90 Years of Discovery and Innovation 03:32
90 Years of Discovery and Innovation GIA (Gemological Institute of America) 4,950 3 года назад
Natural Yellow & Orange Diamonds | GIA Knowledge Sessions Webinar Series 51:15
Natural Yellow & Orange Diamonds | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 10,967 4 года назад
4Cs of Diamond Quality: Diamond Color Grading by GIA 00:58
4Cs of Diamond Quality: Diamond Color Grading by GIA GIA (Gemological Institute of America) 126,093 10 лет назад
Gemological Institute of America (GIA) 04:24
Gemological Institute of America (GIA) Altitude Media 909 10 лет назад
Wim Vertriest: “GIA’s Field Gemology Program and Origin Determination” 22:24
Wim Vertriest: “GIA’s Field Gemology Program and Origin Determination” GIA (Gemological Institute of America) 2,706 6 лет назад
GIA Gemological Research by GIA 05:29
GIA Gemological Research by GIA GIA (Gemological Institute of America) 10,922 9 лет назад

Сейчас ищут