The nail polish Mermaid's Dream by Deborah Lippmann is described as "seafoam splendor" at the official Lippmann website.
The polish was featured in Oprah's O Magazine for April 2012, which I didn't know. I saw it at Vampy Varnish and knew I had to snag a bottle. It is gorgeous.
The polish is a beautiful blue/green super glittery polish. The glitter is micro-glitter in gold, blue and green. The polish is sheer and uneven in one coat, like almost all glitter polishes. However, in two coats, this polish is opaque. I'm not sure how, given that it's really sheer in 1 coat, but the whole is apparently greater than the sum of the parts.
This polish wears fantastically well. In my experience, most glitter polishes will wear better than non-glitter polishes. But even considering that it is a glitter polish, this wears like a champ. The only downside to that is that when you want to take it off, be prepared to invest some time.
The bottle contains 15mL of product and retails for $18 wherever Lippmann polishes are sold. (I got mine at Nordstrom).
When I first saw the swatches at Vampy Varnish and hadn't yet seen the polish in person, I thought Revlon Radiant might be a decent dupe. It's not. I submit the photograph below as evidence.