Evil Crystal Gems: The Impure Gems or The Nightmare Gems by zircontulip

Notes:

Source

From Author:
I´ve seen quite a few people draw evil!Gems and I wanted to give it a try on my own, i´m not sure yet whether to call them Impure Gems or Nightmare Gems. A little character info under the cut:

OP:
The image's description was too long for KYM.
If you're interested in reading each of their backstories then go to the source.