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!Xcj7OA1W0t21oh9dYVtqBWlDMBcKdzz52SoHchCNL5wThe wallpapers are all available on his website as well as prints.
I will post my favorite ones here.