A very pretty minty green creme, this is opaque in two coats. It's in the same vein as mint candy apple but a couple of shades darker/more intense. The finish is good and it's nice to use (fairly average brush, probably most comparable to china glaze, but all the MO cremes I've tried have been good quality and very easy to manipulate). Dried quickly and lasted with no tip wear at all for three days before I got bored and took it off.
I kept it on long enough for my Pirates haul to arrive, and long enough to compare the two. It's definitely not a dupe (phew!). As you can see, they're similar, but Mermaid's tears has a murky, grungy quality to it that Jade Stone doesn't share. It's a simpler, more cheerful rendition of minty green. Love them both, but then, I would.