Nautilus resizing icons


Is it possible to set and resize the icon shown for a directory in nautilus please? Specifically, can I change the size of the icon displayed for the directory.

I have successfully set an icon for a directory (right click, properties, click default icon, select .jpg file), but the icon appears very small (the same size as the default directory icon I think)

If I browse to the directory containing the .jpg file, the icon for the .jpg itself (in a nautilus window) is quite large - it is this size that I would like to achieve when I set the directory icon to this .jpg.

I know I can change the appearance globally in nautilus, using zoom, but I would prefer not to have to have every nautilus window zoomed to this size.

Kind regards