Последние добавленные видео:
ggtl
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5 years ago
375 5 years ago 1:22The New GGTL Spect-Ident Software - A Breakthrough for Gem Screening with the DFI and the D-Tect
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3 years ago
315 3 years ago 50:58The challenges in Testing Melee Sized Diamonds and Colored Stones
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3 years ago
1164 3 years ago 1:13:48GGTL Brown Diamond Webinar hosted by AIGS Bangkok, with Dr. Thomas Hainschwang, April 24, 2020
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1 year ago
42 1 year ago 46:48V Conferenza Nazionale di Gemmologia, Dr. Thomas Heinschwang of GGTL
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3 years ago
21738 3 years ago 20:27Testing Gems In A Gem Lab: Uncover The Secrets With Ggtl | Part 1 | Nimthera
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1 month ago
6402 1 month ago 3:16GGTL - Filthy rich || Dovermen @lilp1t @urbandenzel4747 @dillestmusic