Spring Cut diamonds

[Pearl]

I was looking at whiteflash.com site recently (great site by the way) and I was intrigued by their "Spring Cut" diamond. I never heard of this cut before. I clicked on a couple of the links available and found out that there was less light leakage than princess or radiant cut diamonds. Has anyone dealt with a Spring Cut diamond before? I am interested about having this kind of stone set in my e-ring.

Thanks,
Beth