Quartz Rocklings are presumably children of colossi being held, tortured, and drained by the Twilight's Hammer cult at Lorthuna's Gate[59.6, 41.2] in Deepholm.
They do offer some rather cute emotes when freed:
- The rockling looks up at you questioningly.
- The rockling scampers into the distance, excited by its newfound freedom.
- The rockling thuds happily upon the ground.
- The rockling rumbles in appreciation.
- The rockling looks confused for a moment before running off.
- The rockling clatters its crystals together in thanks.
- The rockling offers a great gravelly sigh of appreciation.
- You hear a loud crackling noise as the rockling tries to smile.
- Patch 4.0.3a (2010-11-23): Added