How does The Necklace of Princess Fiorimonde develop the theme of The Nature of True Beauty and Goodness?

The Necklace of Princess Fiorimonde by Mary De Morgan develops The Nature of True Beauty and Goodness across the chapters the companion marks for this theme.

The book challenges the assumption that physical beauty equals moral goodness, as Fiorimonde's loveliness masks her evil, while characters like Chrysea and the wise Princess Fernanda demonstrate that true worth lies in kindness, courage, and selflessness.

Joan's external beauty contrasts with her inner coldness, highlighting that true goodness requires a heart capable of love.