If you prefer E color lab grown diamond instead of I color lab grown diamond stone, we suggest you below 2.588ct round lab grown diamond stone.
For the replacement stone, the price difference is $392 ($1389*0.8-$899*0.8).
For this ring semi mount, we suggest you replace with 2*3*5mm baguette lab grown diamond instead of 2*3*5mm baguette moissanite.
We update you the semi mount price. It is $629 for this ring semi mount without 2.588ct round lab grown diamond center（NP315120203） ， with 2 pieces 2*3*5mm baguette lab grown diamond accents in 10K white gold. Size 5.75.You paid $468 , so the price difference of semi mount is $35.2($629*0.8-$468).
So you need to paid total price difference is $427.2($392 center stone price difference +$35.2 semi mount price difference.)
