Reminds me of a glittery soap bubble:
1 coat Sally Hansen (Lustre Shine)- Moonstone
2 coats Revlon- Heavenly
1 coat Nicole by OPI (Selena Gomez Collection)- Heavenly Angel
2 coats Poshe topcoat
I have been trying to get this effect for awhile. Finally found the right combination of polish. Still not exactly what I wanted, but pretty close! I'm glad there has been a bunch of iridescent glitters coming out lately from various brands.
It also kind of reminds me of Falcor from the NeverEnding Story.
(picture from here)