Shard of the Gods

Purified Shard of the Gods is a trinket set.

Source

 * drops from Ragnaros in Molten Core.
 * dropped from the classic version of Onyxia in Onyxia's Lair.

With patch 3.2.2, Shard of the Scale was removed from Onyxia's loot table, thus making the set incomplete.