Mysterious, pretty, dark names?

[XxPoisonedPerfectionxX]

Can you think of any mysterios, dark, but pretty names for a girl?
Something delicate and unusual, unique. It's for a girl in a book I'm planning on writing.
@Avery

What's up with emo's?

 

[zilmag]

Sybil, Cassia, Ember, Demetria, Tanith, Mara, Deirdre, Ravenna?