To answer the question about the circular reflection -- yes, possible. Basically, in an ideal studio with a TON of space what I would really want is a lot of specular lights firing almost straight above - this would give hard points of light around in different spots on the pearl.
Since I don't have that amount of space, I tried the circular type parabolic as what I figured would be the best replica of it- unfortunately I was more cramped for space than I really wanted to be. Farther back, that reflector does just fine -- all the photos of Jaden on this thread were done with the same reflector, just farther away, and that shows up on the pearls more "normally."
Also, I knew PP doesn't own one of those parabolics (pretty sure), so thought I'd try something different.