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Introduction[]

This charm is used to make an object unbreakable.

From the Story[]

Harry Potter and the Goblet of Fire[]

Discovered in chapter 37, The Beginning[]

Hermione uses the charm on the glass jar she traps Rita Skeeter (in her Animagus form of a beetle) in. The charm on the jar prevents Skeeter from being able to transform back into her human form.
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