Here are a few pictures of my one and only Marc Jacobs nail polish, Petra. I used two coats here.
It applied easily but didn't wear so well (I blame that on one of my infamous top coat experiments).
The shimmer in it is really pretty and flakie like! Tiny golden flakie shimmers. Petra is kind of ambiguous purply gray super metallic and shimmery. Sorry the lighting is weird in these pictures.
Do you have any Marc Jacobs nail polishes? What do you think of them?