These are lovely, genuine Australian blue-green opal doublets - lovely natural blue-green opal overlaid on ironstone (boulder opal). The are cabbed in a freeform oval shape, and measure 10mm long by 5mm wide. They have natural blue to blue-green hue and mild, green fire. There are two stones to the deal that match for a pair. Lovely natural color!

• Natural Australian opal doublets - Gorgeous deep blue color and blue-green fire

Natural Australian opal doublets - Gorgeous deep blue color and blue-green fireAPCMC