Most unique/undupeable MAC eyeshadows?

[smokeyrose]

I'd say Vex and Club.

I have heard Too Faced Label Wh*re is a great dupe for Club, just better pigmented.

 

[Hilde]

Vex is the one I really haven't seen anything like. It really is great for making me look awake, and goes well with greens, pinks and purples. Might be my favorite shadow ever.

 

[underablanketofstars]

Blue brown and star violet are gorgeous unique shades

 

[underablanketofstars]

Softwash grey pigment is pretty undupeable!