Kaliban's Class Loot list has great suggestions for gear, gems, enchants, for each spec.
www.wow-loot.com/ If you are a JC you can craft all of your healing gems. Which makes it a bit less expensive.
I started out by using green quality +13 healing gems in my gear. As I upgraded my gear, I upgraded the gems.
Spirit is good for mana regen since 2.4. You can get spirit from your gear selections.
Not sure how you would want to gem for PvP, since I don't PvP. Probably have a different set of gear with different focus. Someone else will have to advise.
Just my 2 coppers worth.