Thanks for reaching out to us. We let you know the price difference if you need to replace with 4ct(9.3mm) DEF colro CA cut square cushion moissanite.
exchange to XR0783 engagement ring only in 14k yellow gold 4ct Square cushion Crown Arrow Cut DEF color moissanite with moissanite accents size 8 the price is $963.2(20% off).
The 14k white gold prong
The price difference is $76( $963.2-$300.77-586.43).