One of a Kind Editions Ring hand-fabricated in Japan by jewelry designer Shinobu Marotta (Talkative Atelier) showcasing an extraordinary 5.61 carat crystal semi black opal from the coveted Lightning Ridge mine in Australia, framed and bezel-set in satin-finished 22k yellow gold atop an intricately hand-crafted band in satin-finished 18k yellow gold. This translucent precious opal has phenomenal iridescence with strong rainbow fire. Size 6.75.