The base is OPI, Stranger Tides. The purple petals are Kieko from Zoya, the white petals are Load from Illamasqua, and the stamens are Savina's Grape. Finally, the center yellow pollen is Color Madric's Design Yellow.
Not bad for a first attempt, but not the best.
I've created a tutorial for this manicure. Enjoy! (I'm also trying a new layout for my tutorials, and I must say, I love it.