This is Triple Shine Pearly Whites:
Fairy Snot. My guess is that they're the same type of base, just cut into different-size pieces. I've mostly ignored this polish since I bought it (on clearance at a K-Mart, as you can see). I need to put it over something dark and give it a full-fledged try, because the colors in it are really prettier than I gave it credit for.
Triple Shine was a Sally Hansen polish line, but I'm pretty sure it's discontinued. Sally Hansen seems to switch lines around a lot - Color Therapy and Miracle Gel in; Triple Shine and Diamond Strength out. (You can see that it's not on the list here.)