Devan's Gem Vampirism Headcannon

Gem Vampirism is something made up by Devan4590

How It works
A gem sucks the entity out of another gem, leaving the victim's gem grey and faded, but the vampire gem will be stronger depending on what gem is the victim. A gem can do it as many times as it wants. However, the victim will still exist in the vampire gem as lost souls, though they have no control.

History
In the dark ages of gem times, Bloodstones were using it to gain more and more power, but then a group of gems used the power of memory to stop them. There haven't been any major cases since.

Inside a Vampire gem
If a gem like Steven or Brimstone can access the mind of a vampire gem, then they can find the lost souls of victims inside it. Lost souls look like the gems they once were, but have a faded color scheme and completely blacked out eyes and there will be a black spot where the gem facet was.

Freedom
Lost souls can be freed from vampirism in 2 ways. Once a lost soul is freed, the light of the color of the lost souls will shoot out of the vampire gem's eyes and mouth.

Externally
The method of freeing victim gems externally involves making the vampire gem remember what happened and then the lost souls can be targeted and then they will be freed.

Internally
If Steven entered a vampire gem's mind or Brimstone "Crept into the heart" of a vampire gem then they can see lost souls inside. Lost souls can be reminded of who they were directly from there, and can be freed. V.I.C.K.E.Y could do this to gems brought under her control, but she can no longer do it because she cannot control anything.

Side effects
One side effect is hearing voices of lost souls. The voices will have a ghostly tone to them, and will be around at any time, but most commonly when thinking.

Another one is that if the vampire gem is weak enough, they will hallucinate seeing lost souls. Most commonly in dreams or thoughts.

This can in some cases lead to insanity or the vampire gem losing itself.