Emoji Problems LG G3 Cyanogenmod
I faced with the same problem, and I found this GUIDE, I hope it will help you too!
http://forum.xda-developers.com/android/software/guide-fix-emoji-displaying-black-t3152314

You can also download the emoji packs from here: (the iOS pack worked me fine)
http://forum.xda-developers.com/showthread.php?t=2618523