Justin Maller has made some of the most beautiful wallpapers at http://www.facets.la/

I've downloaded the wallpapers which you can get here: https://mega.co.nz/#!VR0llIQR!Xcj7OA1W0t21oh9dYVtqBWlDMBcKdzz52SoHchCNL5w
The wallpapers are all available on his website as well as prints.

I will post my favorite ones here.