This includes two novels - _Lady of Light_ and _Lady of Darkness_. I read the first of these novels. The setting is postapocalyptic, the culture is very pagan. I liked it, but not enough to keep, or keep reading.
Excellent fantasy, hard to put down. The young woman who becomes Mistress of the Jewels must struggle often alone with her own psychic powers, and those conferred to her with the jewels....in the face of loss and political intrigue in which she cannot know who to trust.