Gems and CD usage is mentioned in the written guide. It's a quick refference one for gems so people won't have to watch the video for minor details. Found here:
http://evrelia.com/retribution-paladin/
BiS List is the only thing not included, but will be edited into the written guide later tonight (CET).
Didn't mention holy 4set because the guide was written during 5.4 PTR/early launch/progression, will add it as well in the written one.
Was planning to add a Sanctified Wrath vs Divine Purpose on a encounter-to-encounter basis, hopefully tonight as well.
Edit: Thanks for the feedback though, it's hard to write down everything (As some things are obvious for me, hence I might overlook it :<)