GRS Gemresearch Documentary: The Mozambique Ruby Collection - A Lifetime Experience
46:04
Inside The Gem Trade: Pigeon’s Blood Ruby | In Search Of Precious Stones | Ep 2/4 | CNA Documentary
12:02
From Rough to World Record - Estrela de Fura - 55.22 ct
17:42
Heat Treating Montana Sapphire
1:21:09
THE FILM !!! "MOGOK : THE LEGENDARY VALLEY OF RUBIES AND THE KING OF MOGOK CRYSTAL"
20:07
Cutting a Massive Gemstone Over 1000 Carats! How I Facet This Jumbo Quartz
21:28
Review of Vietnamese gemstone market.
18:54
How much does a one carat ruby cost? - Comprehensive Guide discussing 4Cs plus Origin & Treatment
29:48