A blackened steel silhouette-cut pin of an oak tree

The silhouetted image of a gnarled oak seems blackened against the last light of evening. Within its branches sits a nightingale haloed by three moons. Beneath the boughs of the oak stands a panther beside a woman's figure. Both have sapphire eyes, yet a third eye of dark moonstone gazes from the middle of the woman's forehead, above a malevolent half-smile. There appears to be something written on it.