Can contribute photos of rings that aren't mine but that I've tried on!
My Ring size is between 5.75 to 6 for reference. Personally the proportions of the side stones on the Tiffany are too large for my taste (lol, don't kick me out PS) but the center stone was a lovely size.
Tiffany one: 1.5ct center with 0.6ct sides. (Size 6)
This one is more modest 0.7ct center with 0.3ct side stones. (Size 6)