Currently I have 3! I have an original .93 marquise from 22 years ago. Not great quality I believe "F" color but SI and definitely visible bowties in it. I have a .50 princess that is of better quality but small. And a 1.21 round that was reset into a HOF halo in June of 2010. I think it is "H" color and maybe VS1. But I always have wanted and cannot get out of my system - a branded ring from Tiffany or Cartier. Currently I'm leaning towards a small .50 ballerine from Cartier. Is it insane to have a 4th diamond ring?