i am use font awesome for extra icons..
here is the link from the plugin
you put it with shortcode like this > [icon name=icon-pencil]
and here the link with fonts
Enfold does not allow you to add custom icons to the font file which is bundled with the theme at the moment but we’re working on a “font icon” generator which will help the user to build a customized font file (which just contains the icons you need). mp3power suggestion seems to be a great workaround for now.