The good news: survival should be on a par with other tanks.
The bad news: it's a lousy stone tank. You've managed to overcome some of the recharge and speed penalties Granite has, but defense is nowhere near the softcap, leaving you as Just Another Tank for survival, rather than the unbeatable juggernaut that Stone can become. Your attacks (particuarly Quick Strike) are badly underslotted, while utility powers (eg. Stamina) are overslotted. You've got a worthless power pick in Hurdle (granite tanks can't jump), and you haven't slotted Kick (with the recharge times you've got, you'll want it to fill in your attack chain). Physical Perfection is fairly superfluous -- the regen boost of 40% is swamped by Rooted's 200%, and if you turn Focused Accuracy off, the only reason you need the endurance is because you've neglected endurance reduction in your attacks. You've attempted to give Granite psi protection, but 11% defense and 10% resistance won't do much for you.
My recommendation is to start over. You need to enhance your powers for their primary functions first, and only then for set bonuses. The bonuses for a stone tank, in rough order of priority, are:
1) Global recharge (get it up to somewhere in the range of -20% to 0%).
2) Run speed (get it up to at least the 14.3 mph of a new character; the 21.5 of single-slotted Swift is better).
3) Energy/Negative defense (45% or so; negative energy attacks often carry recharge debuffs, which really hurt a stone tank).
4) Smashing/Lethal defense (45% or more; a few extra percent will give you protection against defense debuffs).
5) Fire/Cold defense (45% or more; fire and cold are relatively rare attacks).
6) Hitpoint bonuses (Earth's Embrace plus the accolade bonuses will cap your hitpoints, but EE won't be up all the time).
In terms of powers, you may want to take Rock Armor + Minerals to deal with psi-heavy environments.
Hero Plan by Mids' Hero Designer 1.707 http://www.cohplanner.com/ Click this DataLink to open the build! Level 50 Magic Tanker Primary Power Set: Stone Armor Secondary Power Set: Kinetic Melee Power Pool: Fitness Power Pool: Teleportation Power Pool: Speed Power Pool: Fighting Ancillary Pool: Energy Mastery Hero Profile: Level 1: Stone Skin
- (A) Impervium Armor - Resistance/Endurance
- (3) Impervium Armor - Resistance/Recharge
- (3) Impervium Armor - Resistance
- (5) Impervium Armor - Psionic Resistance
Level 1: Quick Strike- (A) Force Feedback - Chance for +Recharge
- (48) Accuracy IO
Level 2: Earth's Embrace- (A) Doctored Wounds - Heal/Endurance
- (5) Doctored Wounds - Endurance/Recharge
- (7) Doctored Wounds - Heal/Recharge
- (7) Doctored Wounds - Heal/Endurance/Recharge
- (9) Doctored Wounds - Heal
- (9) Doctored Wounds - Recharge
Level 4: Smashing Blow- (A) Mako's Bite - Accuracy/Damage
- (11) Mako's Bite - Damage/Endurance
- (11) Mako's Bite - Damage/Recharge
- (13) Mako's Bite - Accuracy/Damage/Endurance/Recharge
Level 6: Swift- (A) Run Speed IO
- (13) Run Speed IO
- (50) Run Speed IO
Level 8: Rooted- (A) Numina's Convalescence - Heal/Endurance
- (15) Numina's Convalescence - Heal/Recharge
- (15) Numina's Convalescence - Heal/Endurance/Recharge
- (17) Numina's Convalescence - Heal
Level 10: Taunt- (A) Perfect Zinger - Chance for Psi Damage
- (17) Perfect Zinger - Taunt/Range
- (19) Perfect Zinger - Taunt/Recharge
- (19) Perfect Zinger - Taunt/Recharge/Range
- (21) Perfect Zinger - Accuracy/Recharge
- (21) Perfect Zinger - Taunt
Level 12: Recall Friend- (A) Interrupt Reduction IO
Level 14: Teleport- (A) Range IO
- (23) Range IO
- (23) Endurance Reduction IO
Level 16: Health- (A) Doctored Wounds - Heal
- (25) Doctored Wounds - Heal/Endurance
- (25) Doctored Wounds - Endurance/Recharge
- (27) Doctored Wounds - Heal/Recharge
- (27) Doctored Wounds - Heal/Endurance/Recharge
Level 18: Repulsing Torrent- (A) Positron's Blast - Damage/Recharge
- (29) Positron's Blast - Damage/Endurance
- (29) Positron's Blast - Accuracy/Damage
- (31) Positron's Blast - Damage/Range
- (31) Positron's Blast - Accuracy/Damage/Endurance
Level 20: Hasten- (A) Recharge Reduction IO
- (31) Recharge Reduction IO
- (33) Recharge Reduction IO
Level 22: Stamina- (A) Performance Shifter - Chance for +End
- (33) Performance Shifter - EndMod/Accuracy/Recharge
- (33) Performance Shifter - EndMod/Recharge
- (34) Performance Shifter - EndMod
- (34) Performance Shifter - EndMod/Accuracy
Level 24: Kick- (A) Empty
Level 26: Tough- (A) Impervium Armor - Psionic Resistance
- (34) Impervium Armor - Resistance/Recharge
- (36) Impervium Armor - Resistance/Endurance
- (36) Impervium Armor - Resistance
Level 28: Burst- (A) Obliteration - Accuracy/Damage/Endurance/Recharge
- (36) Obliteration - Damage
- (37) Obliteration - Damage/Recharge
- (37) Obliteration - Accuracy/Damage/Recharge
- (37) Obliteration - Accuracy/Recharge
Level 30: Weave- (A) Luck of the Gambler - Recharge Speed
- (39) Luck of the Gambler - Defense/Endurance
- (39) Luck of the Gambler - Defense/Recharge
- (39) Luck of the Gambler - Defense
Level 32: Granite Armor- (A) Aegis - Resistance/Endurance
- (40) Aegis - Resistance/Recharge
- (40) Aegis - Endurance/Recharge
- (40) Aegis - Resistance/Endurance/Recharge
- (42) Aegis - Resistance
- (42) Aegis - Psionic/Status Resistance
Level 35: Focused Burst- (A) Devastation - Damage/Endurance
- (46) Devastation - Accuracy/Damage
- (48) Devastation - Damage/Recharge
- (48) Devastation - Accuracy/Damage/Recharge
Level 38: Concentrated Strike- (A) Crushing Impact - Accuracy/Damage
- (42) Crushing Impact - Damage/Endurance
- (43) Crushing Impact - Damage/Recharge
- (43) Crushing Impact - Accuracy/Damage/Recharge
- (43) Crushing Impact - Accuracy/Damage/Endurance
Level 41: Focused Accuracy- (A) Endurance Reduction IO
Level 44: Physical Perfection- (A) Healing IO
- (45) Healing IO
- (45) Healing IO
- (45) Endurance Modification IO
- (46) Endurance Modification IO
- (46) Endurance Modification IO
Level 47: Hurdle- (A) Jumping IO
Level 49: Power Siphon- (A) To Hit Buff IO
- (50) Recharge Reduction IO
- (50) Recharge Reduction IO
------------ Level 1: Brawl- (A) Empty
Level 1: Sprint- (A) Empty
Level 2: Rest- (A) Empty
Level 1: Gauntlet Level 4: Ninja Run