Opal Shell Doublet Free From M4 gradeOpal Locality: Coober Pedy, Australia -An opal doublet is a layer of precious light opal bonded to an ironstone backing. The opal we used is from Coober Pedy; the ironstone we used is from Queensland.
Opal Shell Doublet Free From M4 gradeOpal Locality: Coober Pedy, Australia -An opal doublet is a layer of precious light opal bonded to an ironstone backing. The opal we used is from Coober Pedy; the ironstone we used is from Queensland.