Chalice is a Dark probability mage and teacher of Luna after Alex can't teach her anymore about magic.
Chalice is described as "slightly below average height,with light brown skin and dark eyes. Her hair is black and shoulder length". She is a woman estimated to be in her late twenties or early thirties. 
She grew up and trained in India, and came to London in her mid twenties.
- ↑ Veiled, Chapter 5-6