This past winter I came across OPI's Shattered nail polish. I love it. I tried to take pictures with my iPhone and they were terrible. What it is, is a black topcoat that you paint over your already painted dry nails. As it dries it shatters across your nails to form a crackled two-texture, two-color finish.
On Facebook this afternoon I came across this from Culture of Cute. New shattered colors!
Definitely worth the $8 for a bottle. Can't wait to try the new summer colors!