First of all I have to forewarn you and say how disappointed I am by the pictures! For some reason it kept coming out more blue than purple.
The sparkles are a great holographic glitter from Funky Fingers called Sand & Stiletto. The only place I've ever seen Funky Fingers is Five Below, and they're 3 for $5.
If you don't have a Five Below near you, this glitter polish is an exact dupe of Color Club Sugarplum Fairy:
(left to right)
Color Club Sugarplum Fairy, Pure Ice Spitfire, Funky Fingers Sand & Stilettos