Kyoto Opal 7mm Bead Bracelet with Quartz Cut Glass CombinationDo you know Kyoto Opal developed by Kyocera? Kyoto Opal is made from the same quartz particles as natural opal, and has been carefully cultivated over a long period of time using Kyocera's unique gemstone synthesis technology. The creation of an opal structure that creates a play of color is unique in the world, and this unique and elegant texture cannot be imitated by molded resin products. The big difference with synthetic opal (created opal) is