160 carat rough opal cut an unbelievable gem. Totally unexpected
12:09
I cut this rough white opal into a dazzling gem
9:48
This rare opal pattern is unbelievable - What is it called?
16:51
$800 spent - Do I get my investment back
12:38
$20k gem black opal emerges from this uncut rough opal
20:14
$6000 investment - The best cut ever - Rare Harlequin Black Opal
28:08
Cómo encontrar diamantes en ríos o rocas volcánicas cerca de TI
7:39
Ruby | King of Precious Stones | Gemstone Cutting, Faceting and Polishing | Cut 19.85 & 15.45 carats
10:44