Platinum Diamond Engagement Ring The ring is holding a natural round brilliant diamond that weighs 2.23 carats. The diamond is GIA certified and has a color grade of I and a clarity grade of SI2. The cut, polish and symmetry are excellent. G.I.A. Report Number 1172969989 This ring has scrolling details in the gallery which can be seen from the sides. There are eighteen natural round brilliant diamonds set on the top of the shank. They are graduated in size and resemble a slender bow tie with a diamond bezel in the center. The total weight of the small stones is .21carats. They are HI color and SI clarity.