|crystalline rock shard earrings|
green rock shard necklace
red rock shard ring
black rock shard bracelet
This quest is given by Geologist Fribden in Blackburrow. He can be found in the cave underwater. He asks you to collect three rock samples.
You can get all three rock samples by killing miners and excavators in Blackburrow.
After collecting all three return to Fribden for your reward.