It’s a purple duochrome which shifts to bronze, gold and green, while the other colours in this unnamed set are metallics. The price for the set, as for everything I could see in the store, is quite good: € 2,50 for four 6 ml bottles. I’ve read reviews which say that Primark polish stinks really bad, but I don’t agree at all (it even looks 5-free from the ingredients!). It’s not fast drying though, so you may want to apply thin coats or use some nail polish dryer. Overall I’m very satisfied with it and think it’s a real bargain.
And here it is, layered on black: