DUPE: MAC COPPERING x NYX RUST LOOSE PIGMENT. Both photos taken in natural light. Obviously coppering is an eyeshadow and rust is a loose pigment, but as far as color goes they are pretty much the same. If you are looking for more of a metal-like finish, @nyxcosmetics rust is much more metallic. I find I can only use nyx loose Pearl eyeshadows with a good base and using a damp brush or else they will not stay. If you don't like using pigments (because nyx loose pearl eyeshadows are MESSY) th...