Since this thread's been slow recently, I've decided to compile a list of NPC orgs that at one time or currently allow opals in their badges. Some of these are from GC, so bear with me if you've seen them before.
Alpha Gamma Delta
Alpha Delta Pi
Alpha Xi Delta
Alpha Phi
Gamma Phi Beta
Delta Gamma
Delta Delta Delta
Zeta Tau Alpha
Kappa Alpha Theta
Kappa Kappa Gamma
