How do I find icon path for AppImage file?

I installed Hyper terminal (hyper.is) by downloading the .AppImage file and moving it to /usr/bin/. It doesn't show up in Gnome's launcher though, so I manually created a .desktop file for it. That worked, but the only issue is that the icon isn't displaying. I don't know which path to put in the Icon parameter. How can I find it?