Here some wallpapers, as you can see, they are available in three resolutions:

Hippo Ring Wallpaper

Click the resolution to download

  2880x1800| 1920x1080 | 1400x900

Starck Juicer Wallpaper

Click the resolution to download
  2880x1800| 1920x1080 | 1400x900

(Still working)