An Unbreakable Charm (incantation unknown) is a charm that makes an object unbreakable.

Known uses

It was used by Hermione Granger in 1995 to make a jar unbreakable, in which she placed Rita Skeeter, who was in her Animagus form at the time, to prevent her from transforming back into her human form.

Appearances

• Harry Potter and the Goblet of Fire (First appearance)