* Gemological Laboratory (updated 2024-10-02) ~ youtor.org

Gemological Laboratory (updated 2024-10-02)

Malayan Gemological Laboratory Services MGLS [upl. by Penelopa]
Duration: 12:25
607 weergaven | 8 maanden geleden
Fake GIA Inscription demonstration [upl. by Isahella]
Duration: 1:15
1K weergaven | 25 okt. 2017
TGL  Tourmaline Lanka Gem Lab Profile [upl. by Odnaloy]
Duration: 2:18
147,4K weergaven | 16 sep. 2015
GIA Gemological Laboratory by GIA [upl. by Debra]
Duration: 5:46
749 weergaven | 4 dec. 2018
AIGS Gemology School and Gem Laboratory INTRO [upl. by Chor]
Duration: 2:56
8,7K weergaven | 20 jan. 2020
Ceylon Blue Sapphire Unheated Pear Shape  VVS Clarity Gemstone 245ct [upl. by Scrogan]
Duration: 0:43
13,3K weergaven | 16 sep. 2015
WHY DO YOU NEED A JEWELLERY APPRAISAL [upl. by Riebling70]
Duration: 2:48
527 weergaven | 1 maand geleden
Beware of this kind of Fake Gem Testing Reports  DUGEMOLOGY [upl. by Halona]
Duration: 6:23
1,6K weergaven | 8 mrt. 2022
MENGENAL DUMORTIERITE DARI INDONESIA [upl. by Flynn]
Duration: 4:49
4,8K weergaven | 9 maanden geleden
SEBAIK DAN SEBAGUS APA KUALITAS DARI GIOK ACEH  IDOCRASE [upl. by Arretal84]
Duration: 4:36
8,3K weergaven | 8 aug. 2023
CARA CEPAT MEMBEDAKAN RUBY DAN SPINEL DENGAN MENGGUNAKAN SPECTROSCOPE [upl. by Manda168]
Duration: 4:43
4,5K weergaven | 11 maanden geleden
MENGENAL IRRADIATION CAT’S EYE CHRYSOBERYL DAN CARA MENDETEKSINYA [upl. by Nevag]
Duration: 3:33
9,9K weergaven | 7 jun. 2022
MENGENAL TSAVORITE GARNET HIJAU [upl. by Assyral]
Duration: 3:06
17,7K weergaven | 20 jan. 2021
HATI HATI DENGAN SYNTHETIC EMERALD YANG BANYAK TERSEBAR DI PASARAN [upl. by Gerdi]
Duration: 5:18
8,2K weergaven | 6 maanden geleden
MENILAI BLUE STAR SAPPHIRE YG BERKUALITAS [upl. by Mehala]
Duration: 3:59
311 weergaven | 1 maand geleden
MENGENAL BATU TURQUOISE PIRUS [upl. by Eerolam]
Duration: 7:15
20,6K weergaven | 6 sep. 2022





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