A bezoar, encased in a gold filigree shell, is a “stone” of indigestible mass formed in the guts of animals. They were once believed to be antidotes to poison — and play that role in the Harry Potter universe.

A bezoar, encased in a gold filigree shell, is a “stone” of indigestible mass formed in the guts of animals. They were once believed to be antidotes to poison — and play that role in the Harry Potter univers