Fire opal

"When a priestess uncertain of her path in life stumbles upon a royal stranger left for dead, she discovers her true destiny as the wife of a prince and the target of many, forcing her to master her dark powers, or surrender her soul to the evil that surrounds her."@en
"Deep in the sun-drenched desert, priestess Ginger-Sun carries the power of shape mages. And whispers abound: Is she descended from the beloved Sunset Goddess, or are her nighttime rituals filled with wickedness' Ginger herself is uncertain, until a stranger is left for dead at her feet. Thence her magic begins to burn. Fate makes Ginger the stranger's wife and therefore a target for those who would murder this man to crown another-- and force her magic into twisted ferocity. For unless Ginger masters her dark powers, violence will rein in Taka Mal-- and in her soul."@en
"Deep in the sun-drenched desert, priestess Ginger-Sun carries the power of shape mages. And whispers abound: Is she descended from the beloved Sunset Goddess, or are her nighttime rituals filled with wickedness? Ginger herself is uncertain, until a stranger is left for dead at her feet. Thence her magic begins to burn. Fate makes Ginger the stranger's wife and therefore a target for those who would murder this man to crown another -- and force her magic into twisted ferocity. For unless Ginger masters her dark powers, violence will rein in Taka Mal -- and in her soul."@en