Vintage IGI certified Australian black opal diamond ring US size 6.5

The black opal ring is acquired from Japan. it features large natural black opal of 3.65 ctw, measuring 14.44x12.46 mm. side stones are good quality diamonds totaling 1.31ct. it has vitreous luster of blue and green colors. camera captured purple color at certain angle, but not very obvious to naked eye. all metal is solid PT900 comes with IGI certificate Finger Size: US 6.25 ‎ Resizing Available: no ‎ Item Weight: 14 grams certification: IGI product origin: Japan