GRS Gemresearch Documentary: The Mozambique Ruby Collection - A Lifetime Experience
26:15
MINERAL EXPLORERS | S1 | Ep3 | BRAZIL- MINAS GERAIS
46:48
Three Precious Gems: Rubies, Emeralds, Sapphires
12:02
From Rough to World Record - Estrela de Fura - 55.22 ct
18:54
How much does a one carat ruby cost? - Comprehensive Guide discussing 4Cs plus Origin & Treatment
46:04
Inside The Gem Trade: Pigeon’s Blood Ruby | In Search Of Precious Stones | Ep 2/4 | CNA Documentary
25:38
Colombie : le roi des émeraudes
50:49
Pourquoi l'émeraude est-elle plus convoitée que le diamant ?
20:07