At the moment this is my fav polish. It looks so different depending on the angle and lighting so I took a lot of pictures! This is discontinued but I already found an exact dupe! :-) I wear these types of polishes over black to help the polish last longer as this is rather sheer and when worn alone, you may have to apply 4 coats of Turquoise Opal to get it to look like this.
Indirect natural light
More pics after the break. Trust me, it's worth a look if you haven't seen this polish!