I was interested when i heard that there were new baller opals out there other than Gilson and it sounded as though perchance they were compatible with glass so i decided to do some research. so i looked up Morio and opals, came across a few pics, but for the most part found Kyocera or "kyoto opals." Kyocera refers to their opals as an "opal material composite." the main supplier of Kyocera opals is Sanwa Pearl & Gem based in HK who refers to it as a Polymer Impregnated synthetic opal.

so Gilson really is the only way to go and the jewelry grade is insanely baller.