I am having a custom 3 stone ring made with a 8mm cushion center and wanted cadillac cut side stones. These however, were super hard to come by. I found someone to cut them for me but need exact mm size I need. I have found similar rings online to what I am looking for however, the sidestones, when details are given at all, are just tcw, not mm size. I have a paper chart of cushion sizes with mm and have been trying to measure out and draw beside them to get an idea but its hard to visualize what would look good in real life. Is there any thread or site that lists mm size of side stones along with center stones so I can get a visual? Either way it may be hard since these are an unusual cut. Kind of a half moon, trapezoid hybrid I think as far as how they look next to a center stone.