dia_(shugo_chara!)
Shugo Chara! character. She is Hinamori Amu's fourth guardian chara with a diamond (shape) motif.
She represents the radiance that emits from Amu's heart and her desire to be an idol like Hoshina Utau.
When Amu character transforms with her, she turns into Amulet Dia. Notably, Utau has also character transformed with her, leading to Dark Jewel.