Raid spec for Ret pally is :
http://www.wowhead.com/?talent#sVcdZVZVfbtbIuhdIfsu:0Gomchttp://elitistjerks.com/f76/t68951-retribution_updated_3_3_a/#Talent_SpecsStatsPrio for stats is:
Hit (until capped 8%) > Strength = Expertise (until capped at 6.5% (214 expertise)) > Crit > Agility > Haste > Attack Power > Armor Penetration > Spell Power > Intellect
GeminngDo not go for terrible socket bonuses (i.e. Stam, ArPen, Haste). You will lose more dps than socketing straight strength or hit. Also, you can socket any gem in any socket (excluding meta gems). The color is not a requirement and is stictly used for gaining the socket bonus.
Meta: Relentless Earthsiege Diamond - By not having to socket 2 blue gems you gain more overall dps than using Chaotic Skyflare Diamond.
Red: Use strength gems only, do not gem for Attack Power. You can also gem expertise if you are wanting to cap it.
Yellow: Hit gems are acceptable until you are hit capped. Orange strength/hit gems work if you are slightly under the hit cap. When you are hit capped and still need a yellow for the meta, use an orange strength/crit.