uGems Blue Created Opal Round 6mm Round Beads for Fine Jewelry (1) Blue Fire opal 6mm fully drilled round bead, sold by the bead Very good colors, well drilled and polished, blue base Synthetic Opal made in Japan, Kyoto method Cut in USA, fine magnetic tumble polish finish Cultivated with a quartz-grain structure that is identical to naturally occurring opal; 1 specified buys 1 bead, 3 buys 3 beads, etc.