this Extraordinary genuine natural opal Expertly mounted in solid platinum weighing approx. 7.00 carats, accentuated by 8 baguette-cut Genuine Diamonds totaling 0.53 carats VS clarity and G-H color) carefully placed on either side of the center stone, The top of this piece measures 17.5 mm x 20 mm, 8 mm (height), currently size 6.75 in USA ring size, sizable. Accompanied by a GIA Report N#6213772997