If you have suggestions for farm spots for Dark Ether or Bone Shards, I could use the help as well. I am spending a ton of time at this for little result.
When I'm farming these items, I go to the "Vile Drainage" section of the DC sewers or the Memorial District up above. I alternated between these areas for a few hours yesterday, and I ended up with around 60 Bone Shards and 40 Dark Ethers.