paladin tanking 5 man heroics
No to the solid gems (60 stam). More health without protecting it is just more hp the healer has to heal. Gemming should attempt to have mastery on every gem at least until heroic modes raiding.
If the socket bonus is tank related, ie stam, dodge, parry or mastery, then:
Red = parry + mastery
Blue = stam + mastery
Yellow or prismatic = mastery
Blocking for a paladin reduces damage by 41%!!!!!! (if you are using the block meta and keep holy shield up). At least until 4.2 when they make holy shield just like warrior shield block. Keep holy shield up by using holy power for shield of the righteous or word of glory. This is why it's dangerous at times to use inquisition. You have to be good at managing your holy shield before you do that.
Mastery is how paladins get more block and once it is high enough, it's like having a cool down up most of the time.
"he doens't need healing, he doesn't need healing, he doesn't nee-WHAOSHIT!wtf was that man!". Please stop leaning on TDR. -Teng