Don't have photos but I have a .66 carat solitaire in a ring that is ideal cut and studs that each diamond is .91 carat, also ideal cut and the studs are significantly larger--there's no way you wouldn't notice that they are a LOT bigger.
On this page I show two OECs that are 5.65mm, which is a hair larger than a .60ct modern round brilliant, next to an OEC that is 6.2mm, about the same size as a .90ct RB. Trust me, it is a HUGE difference, much more noticable in person than in these photos even.