We make sense you need #26318 semi mount fit #26397 stone.
We will let you know the price difference.
It is $1040 for #26318 semi mount without #26397 center,with lab grown diamond accents and 2 pieces emerald accents in platinum.
With 20% off, the price difference is $126.5（$1040×0.8-$705.5）.
3/4 eternity 2.4mm lab grown diamond. 2mm round lab grown diamond halo stones
please engrave 1 COR. 13:7 inside band