i think that's essie "buy me a cameo" which is one of my favorite polishes. looks very pretty with a glitter gradient of pink, silver, or gold.
Ninja Polish: Sticks n' Stones
Nail polish remover trick. I just tried this and it worked great!
How to get white nails after so much nail polish -- make a paste using 1 tbsp peroxide and 2 1/4 tbsp baking soda. Let this paste sit on your nails for 5 minutes and voila! White nails! REMEMBER THIS AFTER USING Dark NAIL POLISH! thank you!!