Using wpe you can put metagems in ALL your gem slots
Here's how its done:
1. log your character open uce target wow blah blah everyone knows this
2. search wowhead.com for the ID of your metagem(s)
3.now scan for that value
4.now go to wowhead again and search for [Delicate Living Ruby] (thats the one i use)
5. Change the ID of your metagem to that of of the living ruby
6. now you can put the metagem in any socket
7. Now go and stack 10x 5% stun resistance gems xD
im a bit rusty in making guides so it might be hard to understand
+rep pls