Последние добавленные видео:
Gemology-Certification
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3 years ago
121052 3 years ago 7:34How To Become A Gemologist? | How To Start Your Career In Gemology
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3 years ago
5596 3 years ago 6:26Is Gemology a Good Career Choice? (Common Questions Answered)
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5 years ago
24 5 years ago 14:50Professional Gemologist Certification Course
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1 year ago
47 1 year ago 1:41How do I ensure the authenticity of a gemstone certificate?
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2 years ago
94795 2 years ago 11:00Lab Diamond Certificates GIA vs IGI, learn what is the best diamond
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2 years ago
65 2 years ago 4:58What you need to know about gemstone certification.
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9 years ago
62018 9 years ago 5:38GIA’s Professional Education by GIA
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2 years ago
79 2 years ago 21:09Gemology | Certificate, Diploma, Degree Courses | Career Guidance
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5 years ago
14573 5 years ago 16:07How to get a Gem Certificate Gem Secret Q&A Episode 14 LIFE By KAMIDU
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6 years ago
117227 6 years ago 5:43Comparing GIA And IGI Certified Diamonds