My ring has a princess cut center stone in a tension setting that leaves the diamond completely exposed on two sides, allowing tons of sparkle. The center stone is flanked by two channels on either side, one of graduating rounds, the other of graduating princess stones (24 diamonds in all, making the center stone the 25th). The overall look is much like a yin-yang focusing around a central diamond. The symmetry of this ring was so beautiful that I decided not to have a wedding band made to fit against it. I absolutely adore this ring - it feels like it was designed specifically for me =)