Heart of Gold

Blurb

Heart of Gold is a science fiction novel by Sharon Shinn, published in 2000. The story occurs on an unnamed world in an unnamed city where three races live together. The books focuses on conflicts between the aristocratic, pastoral, and matriarchal Indigo and the clannish, technological, and patriarchal gulden, with little said about the third albino race.
The story follows Nolan Adelpho, an initially conventional indigo biochemist, and Kitrini Candachi, an indigo aristocrat raised among the gulden whose lover is an imprisoned gulden terrorist, as their lives are changed through their understanding of increasingly violent racial conflict around them.