Arcane Orbs collection.

Steps
Examine the rewards that you received from the various collections of shards by type (e.g. Abjuration Shards).
 * Gathered Orb of Abjuration
 * Gathered Orb of Alteration
 * Gathered Orb of Channeling
 * Gathered Orb of Conjuration
 * Gathered Orb of Divination
 * Gathered Orb of Evocation

Rewards

 * Experience
 * Coin
 * Necklace of Flowing Orbs