Advice on size of sidestone

[laxgirl4493]

I have a .89ct round diamond to be set in a Lucida 3 stone mount. My jeweler picked out a pair .32ct and .31ct for the sides.(I wanted to go a bit bigger .35's). She thinks the ones she picked would look great. How do these sound? thanks for any advice and Happy Holidays

 

[pricescope]

Garry (Cut Nut) wrote a while ago:
"I usually have the side stones add up to the center stone weight for a three stone effect.

For a solitaire with 2 shoulder stone effect then the 2 side stones should add up to less than 1/2 the weight of the center"

3-stone Lucida? do you have a picture/link?