/usr/share/java/jmagick.jar is in libjmagick6-java 6.6.9~20130201-svn99-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/jmagick-6.6.9.jar
/usr/share/java/jmagick-6.6.9.jar