It is $175 for this XR0216 ring semi mount without #29097 center, with 3mm round lab grown diamond accents in SS.Size 9.75 (3 stones are bezel design.)

round bottom shank

I attached an old cad of my band and cushion carved set to get a better vision of how I'd like the new three stone ring to sit next to the existing carved band. The shank of the cushion is slightly wider than the band, but they are the same thickness.

We can revise the shank being wider than 2.5mm (2.7-2.8mm) with 2mm thickness of the ring to be the same as the wedding band.