• Shattered Sun Pendant of Acumen
• Item Level 115Disenchants into:
  [Void Crystal]: 1-2
• Binds when picked up
• Neck
• +19 Stamina
  +18 Intellect
• Requires Level 70
• Requires Shattered Sun Offensive - Exalted
• Equip: Increases spell power by 37.
  Equip: Your spells have a chance to call on the power of the Arcane if you're exalted with the Scryers, or the Light if you're exalted with the Aldor.
• Sell Price: 5 81 88
• Vendor 23 27 52

Source

This item is a reputation reward; you must be Exalted with Shattered Sun Offensive to purchase it from Eldara Dawnrunner at Shattered Sun Staging Area, Isle of Quel'Danas

Notes

• The proc of both versions has a hidden cooldown of 15 secs.
• The proc can occur on each tick of a dot, including aoe dots like Consecration. Reactive damage such as Retribution Aura or Eye for an Eye also can proc.

Aldor Exalted effect

• The Aldor proc is "Light's Wrath", which grants +120 spell damage and healing for 10 seconds.

Scryers Exalted effect

• The Scryers proc is "Arcane Bolt", which is a bolt that causes 333-367 arcane damage.
• The Scryers proc can crit as a spell, doing 1.5x damage.
• The Scryers proc is affected by spell critical strike, but not +spell damage and healing or spell hit.

Patches and hotfixes

 Hotfix (2008-04-10): "Several bugs have been fixed with the Shattered Sun Pendants. Shattered Sun Pendants of Acumen and Might will now be triggered only by spells and abilities which cause damage. Shattered Sun Pendant of Might will no longer break crowd control effects such as Scattershot with its triggered effect. Shattered Sun Pendants of Acumen, Might, and Restoration now all have correct range limits."
Patch 2.4.0 (25-Mar-2008): Added 

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB