Gemological Science International (gsi)

2:16

Gemological Science International (GSI): Clarity
Gemological Science International (GSI)
215 views
2:22

Gemological Science International (GSI): Color
Gemological Science International (GSI)
163 views
4:06

Gemological Science International (GSI) Lab Tour
Gemological Science International (GSI)
835 views
3:58

Gemological Science International (GSI): Laboratory-Grown Diamonds
Gemological Science International (GSI)
444 views
2:07

Gemological Science International (GSI): Carat Weight
Gemological Science International (GSI)
57 views
2:02

Gemological Science International (GSI): Cut + Light Performance
Gemological Science International (GSI)
289 views
2:58

Gemological Science International (GSI): Cut + Diamond Finish
Gemological Science International (GSI)
323 views
2:44

About Gemological Science International (GSI)
Gemological Science International (GSI)
2K views
2:12

GSI: Diamond Education Courses
Gemological Science International (GSI)
330 views
5:18

How To Know If Your Diamond Jewelry Is “Real” And Has Natural Diamonds
Gemological Science International (GSI)
439 views
16:34

Mark Gershburg & Debbie Azar, Co-Founders of GSI: Interviewed by The New Jeweller Group
Gemological Science International (GSI)
860 views
0:33

GSI Virtual Diamond Examination (VDX)
Gemological Science International (GSI)
459 views
6:03

CEO of GSI, Mark Gershburg: Interviewed by The New Jeweller Group at IIJS Mumbai 2016
Gemological Science International (GSI)
309 views
0:18

GSI: Professional Service
Gemological Science International (GSI)
41 views
11:50

GSI's Debbie Azar On BOLD TV: The Differences Between Natural and Lab Grown Diamonds
Gemological Science International (GSI)
152 views
6:17

In Depth With Debbie: GSI's Debbie Azar Interviews Andie Weinman
Gemological Science International (GSI)
115 views
2:10

GSI: Testing & Screening
Gemological Science International (GSI)
170 views
0:17

GSI: Integrity
Gemological Science International (GSI)
33 views
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