Последние добавленные видео:
GIA-laboratory
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6 years ago
1554 6 years ago 6:02Video GIA lab Bangkok 2015
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9 years ago
149760 9 years ago 5:46GIA Gemological Laboratory by GIA
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1 year ago
4783 1 year ago 1:16IGI vs GIA Certificates for Lab Grown Diamonds
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5 years ago
10336 5 years ago 59:58An Overview of Pearl Identification Techniques | GIA Knowledge Sessions Webinar Series
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3 years ago
9519 3 years ago 1:05:08Interesting Discoveries from the GIA Laboratory | GIA Knowledge Sessions Webinar Series
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4 years ago
9703 4 years ago 58:05Laboratory-Grown Colored Gemstones: Crystal Growth Methods | GIA Knowledge Sessions Webinar Series
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10 years ago
1366282 10 years ago 4:20How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA
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4 years ago
17640 4 years ago 57:24Diamond Color Treatment and Its Identification | GIA Knowledge Sessions Webinar Series
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10 years ago
65609 10 years ago 3:24How to Read a GIA Grading Report Video by GIA
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5 years ago
13497 5 years ago 59:04Laboratory-Grown Diamonds from China | GIA Knowledge Sessions Webinar Series
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4 years ago
3120 4 years ago 1:01New LGDR by GIA
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5 years ago
86763 5 years ago 1:03:52Laboratory-Grown Diamonds: Updates and Identification | GIA Knowledge Sessions Webinar Series
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2 years ago
727838 2 years ago 6:15NATURAL VS. LAB DIAMONDS: WHAT'S THE DIFFERENCE?
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3 years ago
5373 3 years ago 57:21A Gemstone’s Journey through the GIA Laboratory | GIA Knowledge Sessions Webinar Series
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2 years ago
94460 2 years ago 11:00Lab Diamond Certificates GIA vs IGI, learn what is the best diamond
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1 year ago
11648 1 year ago 1:55Natural & Laboratory-Grown Diamonds: What's the Difference?
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6 years ago
93 6 years ago 2:59Gia Laboratory