I have compiled a nearly complete list of sets of armor for priests here. I hope you find it informative and well-organized. Please let me know of any problems or inaccuracies.

(Note: I am not yet done with the PvP rewards and the BC sets.)

Tier 0 - Vestments of the Devout

	Devout Crown	71 Armor, Durability 182 +24 Intellect, +15 Spirit , +13 Stamina
	Devout Mantle	64 Armor, Durability 182 +21 Intellect, +9 Spirit, +4 Stamina
	Devout Robe	89 Armor, Durability 182 +24 Intellect, +15 Spirit, +13 Stamina
	Devout Belt	46 Armor, Durability 182 +20 Intellect, +9 Spirit, +4 Stamina
	Devout Bracers	35 Armor, Durability 182 +10 Intellect, +10 Spirit, +7 Stamina
	Devout Gloves	52 Armor, Durability 182 +17 Spirit, +10 Intellect, +9 Stamina
	Devout Skirt	76 Armor, Durability 182 +23 Spirit, +15 Intellect, +12 Stamina
	Devout Sandals	58 Armor, Durability 182 +17 Spirit, +10 Intellect, +9 Stamina

Tier 0.5 - Vestments of the Virtuous

	Virtuous Crown	86 Armor, Durability 514 +17 Intellect, +16 Stamina, +16 Spirit Equip: Increases damage and healing done by magical spells and effects by up to 11. Equip: Increases your spell critical strike rating by 14. Equip: Restores 6 mana per 5 sec.
	Virtuous Mantle	69 Armor, Durability 514 +13 Intellect, +12 Spirit, +12 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 12.
	Virtuous Robe	106 Armor, Durability 514 +22 Intellect, +12 Spirit, +21 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 14. Equip: Restores 6 mana per 5 sec.
	Virtuous Belt	52 Armor, Durability 514 +13 Intellect, +12 Spirit, +12 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 12.
	Virtuous Bracers	40 Armor, Durability 514 +8 Intellect, +8 Spirit, +8 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 9. Equip: Restores 2 mana per 5 sec.
	Virtuous Gloves	61 Armor, Durability 514 +12 Spirit, +15 Intellect, +14 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 11.
	Virtuous Skirt	81 Armor, Durability 514 +13 Stamina, +14 Intellect, +12 Spirit Equip: Increases damage and healing done by magical spells and effects by up to 16. Equip: Restores 6 mana per 5 sec.
	Virtuous Sandals	73 Armor, Durability 514 +12 Spirit, +13 Intellect, +12 Stamina Equip: Increases damage and healing done by magical spells and effects by up to 12. Equip: Restores 7 mana per 5 sec.

Tier 1 - Vestments of Prophecy

	Circlet of Prophecy	94 Armor, Durability 202 +27 Intellect, +20 Spirit, +17 Stamina, +10 Fire Resistance Equip: Increases damage and healing done by magical spells and effects by up to 12.
	Mantle of Prophecy	87 Armor, Durability 202 +23 Intellect, +10 Spirit, +13 Stamina, +7 Shadow Resistance Equip: Increases damage and healing done by magical spells and effects by up to 9.
	Robes of Prophecy	116 Armor, Durability 202 +27 Intellect, +17 Spirit, +20 Stamina, +10 Fire Resistance Equip: Increases healing done by spells and effects by up to 22.
	Girdle of Prophecy	65 Armor, Durability 202 +22 Intellect, +10 Spirit, +10 Stamina, +7 Fire Resistance Equip: Increases damage and healing done by magical spells and effects by up to 9. Equip: Restores 4 mana per 5 sec.
	Vambraces of Prophecy	51 Armor, Durability 202 +14 Intellect, +10 Spirit, +8 Stamina Equip: Increases healing done by spells and effects by up to 24. Equip: Restores 2 mana per 5 sec.
	Gloves of Prophecy	72 Armor, Durability 202 +15 Intellect, +15 Spirit, +10 Stamina, +7 Fire Resistance Equip: Increases healing done by spells and effects by up to 18. Equip: Restores 6 mana per 5 sec.
	Pants of Prophecy	101 Armor, Durability 202 +24 Intellect, +20 Spirit, +18 Stamina, +10 Shadow Resistance Equip: Increases healing done by spells and effects by up to 22. Equip: Restores 6 mana per 5 sec.
	Boots of Prophecy	80 Armor, Durability 202 +18 Intellect, +15 Spirit, +17 Stamina, +7 Shadow Resistance Equip: Increases healing done by spells and effects by up to 18.

Tier 2 - Vestments of Transcendence

	Halo of Transcendence	107 Armor, Durability 211 +27 Intellect, +22 Spirit, +17 Stamina, +10 Fire Resistance, +10 Frost Resistance Equip: Increases healing done by spells and effects by up to 48.
	Pauldrons of Transcendence	99 Armor, Durability 211 +25 Intellect, +13 Spirit, +12 Stamina, +10 Fire Resistance Equip: Increases healing done by spells and effects by up to 26.
	Robes of Transcendence	132 Armor, Durability 211 +27 Intellect, +16 Spirit, +17 Stamina, +10 Fire Resistance, +10 Nature Resistance Equip: Increases healing done by spells and effects by up to 57.
	Belt of Transcendence	74 Armor, Durability 211 +26 Intellect, +9 Spirit, +14 Stamina, +10 Shadow Resistance Equip: Increases healing done by spells and effects by up to 26.
	Bindings of Transcendence	58 Armor, Durability 211 +13 Intellect, +16 Spirit, +9 Stamina Equip: Increases healing done by spells and effects by up to 33.
	Handguards of Transcendence	83 Armor, Durability 211 +20 Intellect, +13 Spirit, +12 Stamina, +10 Shadow Resistance Equip: Increases healing done by spells and effects by up to 29. Equip: Increases your spell critical strike rating by 14.
	Leggings of Transcendence	116 Armor, Durability 211 +21 Intellect, +21 Spirit, +16 Stamina, +10 Shadow Resistance, +10 Arcane Resistance Equip: Increases healing done by spells and effects by up to 46. Equip: Restores 7 mana per 5 sec.
	Boots of Transcendence	91 Armor, Durability 211 +17 Intellect, +17 Spirit, +17 Stamina, +10 Fire Resistance Equip: Increases healing done by spells and effects by up to 35.

Tier 3 - Vestments of Faith

	Circlet of Faith	123 Armor, Durability 525 +22 Spirit, +22 Intellect, +22 Stamina Equip: Increases healing done by spells and effects by up to 75. Equip: Restores 5 mana per 5 sec.
	Shoulderpads of Faith	111 Armor, Durability 525 +17 Spirit, +18 Intellect, +17 Stamina Equip: Increases healing done by spells and effects by up to 51. Equip: Restores 3 mana per 5 sec.
	Robe of Faith	158 Armor, Durability 525 +21 Spirit, +27 Intellect, +26 Stamina Equip: Increases healing done by spells and effects by up to 64. Equip: Restores 5 mana per 5 sec.
	Belt of Faith	85 Armor, Durability 525 +23 Intellect, +18 Stamina, +17 Spirit Equip: Increases healing done by spells and effects by up to 48.
	Bindings of Faith	66 Armor, Durability 525 +11 Stamina, +15 Intellect, +17 Spirit Equip: Increases healing done by spells and effects by up to 40.
	Gloves of Faith	95 Armor, Durability 525 +22 Spirit, +21 Intellect, +16 Stamina Equip: Increases healing done by spells and effects by up to 40. Equip: Restores 4 mana per 5 sec.
	Leggings of Faith	133 Armor, Durability 525 +28 Spirit, +26 Intellect, +25 Stamina Equip: Increases healing done by spells and effects by up to 66.
	Sandals of Faith	102 Armor, Durability 525 +13 Spirit, +19 Stamina, +22 Intellect Equip: Increases healing done by spells and effects by up to 44. Equip: Restores 6 mana per 5 sec.
	Ring of Faith	Durability 525 +16 Intellect, +16 Spirit Equip: Increases healing done by spells and effects by up to 55.

Tier 4 - Hallowed Raiment

Burning Crusade gear. Read/see it for now on WoWInsider.

The Highlander’s Intent

	Highlander’s Epaulets	196 Armor, Durability 473 +18 Stamina, +17 Intellect Equip: Increases damage and healing done by magical spells and effects by up to 12. Equip: Restores 4 mana per 5 sec.
	Highlander’s Cloth Girdle	150 Armor, Durability 473 +7 Stamina, +6 Intellect Equip: Increases damage and healing done by magical spells and effects by up to 14. Equip: Increases your spell critical strike rating by 14.
	Highlander’s Cloth Boots	161 Armor, Durability 473 +16 Stamina, +8 Intellect Equip: Increases damage and healing done by magical spells and effects by up to 12. Equip: Run speed increased slightly.