Someone I thought was a good friend until... well we won't go there. But any way, when I got my ring from the current and she seen it, her response was "oh, hummm nice." I like my ring, single diamond, princess cut, high in color and clarity. Her ring.... she has two diamonds set on each side of the main diamond. I would have loved to take her ring and mine to a jeweler and ask which ring had the better quality diamond in it. Mine probably cost just as much as hers, b/c of the better diamond.
Most girls/women don't look at that aspect of it. That just want the 15 carat diamond b/c it bigger then yours.