Most Expensive Gem Cut
21:02
Cutting gemstones: cushion cut in amethyst.
13:21
Demystifying Gem Cut Styles
21:28
Review of Vietnamese gemstone market.
18:52
The #2 biggest price factor in gemstones - Clarity
5:40
5 Gems More Expensive Than Diamonds
12:02
From Rough to World Record - Estrela de Fura - 55.22 ct
28:00
Lapidei uma pedra com 361 facetas no corte
14:28