PS - not to say I think ours is. It certainly holds first place in my heart

but as for most beautiful sorority badge, I think I'd have to include on the list...
KD's diamond
ADP's diamond
KAQ's triangle
SSS's triangle
SK's triangle
SSS's triangle
KKG's key
PBF's arrow
though I love the badges that are the org's secret letters on top of each other (like
CW, AF, AGD, AOP) because they're so symbolic.