This ring is gorgeous!!! The center diamond is 3/4 ct. and the total weight of the diamonds in the ring is 1.5ct. The ring is currently a size 5. I am going to include the wedding band with this listing!!! This set is currently suggested to retail at Zales for $5,339 (before taxes and insurance!) The halo is cushion shaped. Anyone would LOVE this ring! I do not have a specific certification for this ring or diamond, but I did take it to an AGS and GIA Gemologist for an appraisal before listing it on here!