Rock Elemental Shard

Rock Elemental Shards dropped from the following mobs in Badlands:
 * Lesser Rock Elemental
 * Rock Elemental
 * Enraged Rock Elemental
 * Greater Rock Elemental
 * Ambassador Infernus
 * Fam'retor Guardian
 * Rumbler

It also drops from Smoldar in Searing Gorge.

As a quest objective

 * Badlands Reagent Run