This is Stila Nail Polish in City Lights. It is a gorgeous gold glitter polish, very sparkly. I don't have anything like this in my polish collection so it is a lovely addition.
The glitter isn't too dense in the polish, it has just the right balance of clear polish and glitter particles (glarticles as they shall henceforth be known). Some polishes look nice but then you end up with, like, 4 glarticles on the nail. Some polishes are overly glittery and you end up looking like you fingered a unicorn. This one is just perfect. A nice amount of glitter, great on its own or over another colour.