Lucky Duck is a medium green shade from Orly’s ‘Birds of a Feather’ collection. The formula on this polish makes it very easy to apply; it’s the perfect consistency and opaque in two coats. It holds up well, leaving only minor tip wear after a few days.
As far as dupes are concerned, OPI’s Jade Is the New Black is quite close, though I think Lucky Duck is slightly more vibrant. If you have one, I don’t think you need the other.
The swatch in the photos above is two coats of Lucky Duck in artificial light.