Thundering Skyflare Diamond

Thundering Skyflare Diamonds are meta gems that have a 100% chance on melee/ranged auto attack to grant 480 haste to the user for six seconds, with a forty five second cooldown.

Source
Thundering Skyflare Diamonds are created by Jewelcrafting, requiring a minimum skill of 420.

Materials required:
 * Skyflare Diamond
 * Simple Grinder (tool)

The recipe for this item,, is a world drop in Northrend, most commonly in instances.