Последние добавленные видео:
GemologyJourney
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3 years ago
120840 3 years ago 7:34How To Become A Gemologist? | How To Start Your Career In Gemology
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1 year ago
3855 1 year ago 2:45Mastering Gemology: The Complete Beginner's Guide to Gemstones #gems
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5 years ago
406650 5 years ago 48:58The Gemstone Journey
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3 months ago
332 3 months ago 51:22ISG Journey Thru Gemology: Rubies Natural, Created, and Treated
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3 months ago
113 3 months ago 23:41From Antwerp to Bangkok: Nathali’s Inspiring Gemology Journey
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1 year ago
67815 1 year ago 11:12How To Make MONEY With RIVERSTONES
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4 years ago
21513 4 years ago 4:29How to Become a (Qualified) Gemologist
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1 year ago
2342325 1 year ago 9:27That's how you'll find RUBIES and SAPPHIRES - #crystals #gems
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4 years ago
693 4 years ago 3:14:33"People & Places: Journey in Humanitarian Gemology", a webinar with Richard W. Hughes