/etc/X11/ is in crystalcursors 1.1.1-13.
This file is owned by root:root, with mode 0o755.
..
/etc/X11/cursors/
/etc/X11/cursors/crystalblue.theme
/etc/X11/cursors/crystalblue_classic.theme
/etc/X11/cursors/crystalblue_nonanim.theme
/etc/X11/cursors/crystalblueleft.theme
/etc/X11/cursors/crystalblueleft_classic.theme
/etc/X11/cursors/crystalblueleft_nonanim.theme
/etc/X11/cursors/crystalgray.theme
/etc/X11/cursors/crystalgray_nonanim.theme
/etc/X11/cursors/crystalgrayleft.theme
/etc/X11/cursors/crystalgrayleft_nonanim.theme
/etc/X11/cursors/crystalgreen.theme
/etc/X11/cursors/crystalgreen_classic.theme
/etc/X11/cursors/crystalgreen_nonanim.theme
/etc/X11/cursors/crystalgreenleft.theme
/etc/X11/cursors/crystalgreenleft_classic.theme
/etc/X11/cursors/crystalgreenleft_nonanim.theme
/etc/X11/cursors/crystalwhite.theme
/etc/X11/cursors/crystalwhite_nonanim.theme
/etc/X11/cursors/crystalwhiteleft.theme
/etc/X11/cursors/crystalwhiteleft_nonanim.theme