From their Spring 2011 Collection, this is SpaRitual: Circle of Life
A very bright, blue creme which benefits from a top coat to boost the gloss factor. Applies beautifully with no nail staining either (woohoo!)
I do wish SpaRitual polishes were a little easier to come by because they makes some beautiful shades.
As it is, you can purchase this online from their website priced at £8.50 for a 15ml bottle.