Unfortunately, I've heard not-so-good things about the formula, and I just can't swing $16 right now for a polish with iffy formula. So, this is my attempt at a reasonable facsimile...
This is 2 coats of Nubar 2010 (a mylar flakie topcoat similar to Sally Hansen Hidden Treasure et al) over 2 coats of Barielle Berry Blue (a deep blue jelly-ish creme).
I think this would have looked much better if I'd been able to use a true, deep blue jelly, rather than just a polish with a jelly-ish finish. I tried to layer Berry Blue with 2010 and Berry Blue just covered up the flakies. There was no "jelly sandwich" effect with this. So, I opted just to use 2 coats of 2010 over the basecolor. If I had to do it over again, I would probably go lighter with the flakies so it looks closer to the Lippmann.
I think this looks similar to Deborah Lippmann Ray of Light, but it's by no means a dupe, and at some point, I will probably end up purchasing Ray of Light and then complaining about the thick formula. If you have a deep blue true jelly, I think you would be much more successful creating a dupe to Ray of Light.
Berry Blue and 2010 are both readily available, and both retail in the $8 range.