Guess the yield % from this rough opal.
27:27
Opal cutting: Dremel v Andamooka opal.
8:18
Roger & Lee's Score BIG With Brand New Way Of Processing Opal!! | Outback Opal Hunters
11:11
UMA JAZIDA DE TURMALINAS feliz natal
1:03:34
Opal rough to gemstone: the full cut.
20:19
Forging golden Yakut knives from truck leaf springs: Detailed instructions DIY
6:21
SPOT THE FAKE OPAL!
39:53
Treating matrix opal and more.
39:22