How To Become A Gemologist? | How To Start Your Career In Gemology Gemstones 7:34 2 years ago 106 811 Далее Скачать
Mineralogist Answers Gemstone Questions From Twitter | Tech Support | WIRED WIRED 17:45 8 months ago 717 257 Далее Скачать
Mastering Gemology: The Complete Beginner's Guide to Gemstones #gems Roots Rocks 2:45 7 months ago 2 310 Далее Скачать
Geology 101: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar Series GIA (Gemological Institute of America) 1:12:13 4 years ago 106 047 Далее Скачать
L 48E 1 | More Tools & 🤷♂️✌️ 7 Lighting Conditions You Must Know #gemology #gemstoneexploration Sapphire Kingdom Gemology 0:58 2 days ago 14 Далее Скачать
How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA GIA (Gemological Institute of America) 4:20 10 years ago 1 293 968 Далее Скачать
World's greatest treasure: crystals and gemstones | FULL DOCUMENTARY SLICE Full Doc 52:52 1 year ago 838 697 Далее Скачать
Gemology Schools: A Candid Review from Someone Who's Been There. Gemology for Schmucks 15:25 2 years ago 10 409 Далее Скачать
SPECTROSCOPES, Gem identification, Gemological tool, Made in Japan AlfamirageJPshortclips 1:11 2 years ago 5 397 Далее Скачать
Is Gemology a Good Career Choice? (Common Questions Answered) Haywoods Gems 6:26 2 years ago 3 127 Далее Скачать
Do Pearls Dissolve in Vinegar? #gems #gemology #science Avi The Gem Guy 0:16 1 year ago 4 118 626 Далее Скачать