One of the two glitter shades from OPI's new 6-piece specialty Nicki Minaj collection, Metallic 4 Life is a sheer black jelly with both small round and large hexagonal silver glitter. It's somewhat sheer, so I'd recommend layering it over a plain black polish so that you can apply and maneuver the glitter around to get the right look without leaving bald spots in your base. These photos are three coats on top of a clear basecoat and you can see that some of my little bald spots didn't stand up to the flash of my camera.
Below, I've also compared M4L to China Glaze Tinsel Town, which from M4L's promo photos I assumed to be similar. That's the not the case, though; happily it's different but just as awesome. Black polishes with shiny glitter, yeah they're awesome.