Unicorn horn

The horn of a unicorn has magical properties that make it a useful ingredient in potions.

In 1991, unicorn horns were sold at the Apothecary in Diagon Alley for twenty-one Galleons each.

In the 1991–1992 school year, First year students at Hogwarts used unicorn horn in their Potions classes.

Behind the scenes

 * It is likely that under normal circumstances horns are only taken from unicorns that have already died, since Firenze remarks that "it is a monstrous thing, to slay a unicorn" . It may also be possible that the horn can be taken without killing the unicorn, or that only a small part of the horn is taken from a living unicorn.

Appearances

 * Harry Potter and the Philosopher's Stone