Rune

Rune reveals his identity by showing his signet ring. All the nobility in Valheigh have rings like this. The tree in the middle is the mark of House Beowald.

When a male member of a House reaches twelve years of age, he receives a ring with a unique design that becomes his mark for the rest of his life. When Rune is traveling incognito, he wears his ring on a cord around his neck.

Justin has a ring, too, but since his father (Lord Redley) disowned him, he does not have the right to wear it anymore.