Andamooka concrete matrix opal treatment.
36:40
Resin treating rainbow matrix opal.
13:53
Treating Andamooka Colour Concrete (aka Rainbow Matrix)
17:34
Andamooka opal: a better look.
48:40
Andamooka matrix opal treatment.
20:18
Uncut gem screams TOP BLACK OPAL I expose and polish
18:51
Selecting~Sawing and Cutting Boulder Opal
17:15
Can You Remove The Smoke From Opal?
30:34