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"The Hardening Charm will turn an object into solid stone. This can be surprisingly handy in a tight spot. Of course, most students only seem to use this spell to sabotage their fellow students' schoolbags or to turn a pumpkin pasty to stone just before someone bites into it. It is unwise to try this unworthy trick on any of your teachers."
Miranda Goshawk, Book of Spells[src]

The Hardening Charm[1] (Duro) is a charm used to change objects into stone.

History

During the 1986–1987 school year, the Hardening Charm was taught to third years in Transfiguration class at Hogwarts School of Witchcraft and Wizardry.[2] Jacob's sibling briefly used this spell on a Jumbo Dungbomb, as a part of Tulip Karasu's plan to prank on Merula Snyde, Barnaby Lee, and Ismelda.[3]

Hermione Granger cast the spell at a tapestry during the Battle of Hogwarts, turning it into stone and wounding the two Death Eaters who were pursuing her, Harry Potter, and Ron Weasley.[citation needed]

Etymology

Duro is Latin for "I harden" or "I stiffen"; the same term is Portuguese for "hard" or "rough"; it makes sense given J. K. Rowling's relation to the language.

Appearances

Notes and references

  1. First Spells with Wonderbook™: Book of Spells on YouTube
  2. Harry Potter: Hogwarts Mystery, Year 3, Chapter 5 (Tulip Karasu) - Transfiguration Lesson "Duro"
  3. Harry Potter: Hogwarts Mystery, Year 3, Chapter 6 (The Letter from No One)


Transfiguration (class)
VeraVerto175px
Branches of Transfiguration
Transformation · Vanishment · Conjuration · Untransfiguration
Known practitioners
Circe · Emeric Switch · Falco Aesalon · Mirabella Plunkett · Thaddeus Thurkell
Professors
Albus Dumbledore · Minerva McGonagall
Textbooks
A Beginner's Guide to Transfiguration · Intermediate Transfiguration · A Guide to Advanced Transfiguration
Transfiguration spells studied at Hogwarts
Change of hair colour and style (Crinus Muto) · Hardening Charm (Duro) · Mending Charm (Reparo) · Reparifarge · Softening Charm (Spongify) · Switching Spell · Vanishing Spell
Transforming Spells
Animal to Water Goblet (Vera Verto) · Beetle Buttons · Cat to Cauldron (Felifors) · Chair to cat · Guinea fowl to guinea pig · Hedgehog to pincushion · Match to needle · Meddling Man to Monkey · Mice to Snuffboxes · Owl to Opera Glasses (Strigiforma) · Porcupine to Pin Cushion (Hystrifors) · Small Child to Rat · Small Object to Dragon (Draconifors) · Snail to Teapot · Target to Bird (Avifors) · Target to Rabit (Lapifors) · Teacup to Rat · Teapot to tortoise · White Rabbits to Slippers