Here are the best items available without stepping into a raid or arenas, according to the Rawr DPS tool (http://www.codeplex.com/Rawr) - note this assumes you are going for a Raid level hit rating, have the shaman +hit talents, and have a shadow priest or balance druid in the raid:

Head:
Best:
www.wowhead.com/?item=Conqueror's Worldbreaker Helm
Gems: www.wowhead.com/?item=Chaotic Skyflare Diamond, www.wowhead.com/?item=Reckless Ametrine
Enchant: www.wowhead.com/?item=Arcanum of Burning Mysteries
Source: Vendor, 58 Emblems of Conquest

2nd:
www.wowhead.com/?item=Gaze of the Unknown
Gems: www.wowhead.com/?item=Chaotic Skyflare Diamond, www.wowhead.com/?item=Runed Cardinal Ruby
Enchant: www.wowhead.com/?item=Arcanum of Burning Mysteries
Source: The Black Knight, Heroic 5-man ToC

Neck:
Best:
www.wowhead.com/?item=Brilliant Hailstone Amulet
Gem: www.wowhead.com/?item=Reckless Ametrine
Source: Confessor's Cache, Normal 5-man ToC

2nd:
www.wowhead.com/?item=Symbol of Redemption
Gem: www.wowhead.com/?item=Veiled Ametrine
Source: The Black Knight, Heroic 5-man ToC

Shoulder:
Best:
www.wowhead.com/?item=Thrall's Shoulderpads of Conquest
Gem: www.wowhead.com/?item=Veiled Ametrine
Enchant: www.wowhead.com/?item=Greater Inscription of the Storm
Source: Vendor, 30 Emblems of Truimph

2nd:
www.wowhead.com/?item=Mantle of the Eternal Sentinel
Enchant: www.wowhead.com/?item=Greater Inscription of the Storm
Source: AH

Back:
Best:
Furious www.wowhead.com/?item=Relentless Gladiator's Cloak of Subjugation
Enchant: www.wowhead.com/?item=Formula: Enchant Cloak - Greater Speed
Source: PvP, 38,000 Honor

2nd:
www.wowhead.com/?item=Cloak of Kea Feathers
Enchant: www.wowhead.com/?item=Formula: Enchant Cloak - Greater Speed
Source: Vendor, 25 Emblems of Valor

**will finish the rest when I get home from work**