Also known as: アミュレットダイヤ
When Hinamori Amu character transforms with her Guardian Chara Dia (Shugo Chara!), she turns into Amulet Dia. Similarly to Dia, she has a Diamond (Shape) motif.
She encompasses Amu's "would-be-self" if she were a more confident, radiant idol like Hoshina Utau.