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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 turn objects to 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 Murk.[3]

During the Battle of Hogwarts on 2 May, 1998 Hermione Granger cast this spell at a tapestry, turning it into stone and wounding the two Death Eaters who were pursuing her, Harry Potter, and Ron Weasley.[4]

Etymology

Duro is Latin for "I harden" or "I stiffen"; the same term is Spanish and 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)
  4. Harry Potter and the Deathly Hallows, Chapter 32 (The Elder Wand)


Transfiguration (class)
COS Vera Verto demo
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
Colour Change Charm (Colovaria) · Change of hair colour and style (Crinus Muto) · Hardening Charm (Duro) · Mending Charm (Reparo) · Reparifarge · Softening Charm (Spongify) · Switching Spell · Vanishing Spell (Evanesco)
Conjuring Spells Bird-Conjuring Charm (Avis) · Inanimatus Conjurus Spell · Orchideous · Snake Summons Spell (Serpentsortia)
Transforming Spells Animal to Water Goblet (Vera Verto) · Beetle Buttons · Cat to Cauldron (Felifors) · Chair to cat · Cross-Species Switches · Desk Into Pig · Dinner plate to mushroom · 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 matchbox (Flintifors) · Target to Rabbit (Lapifors) · Teacup to Rat · Teapot to tortoise · White Rabbits to Slippers


Charms (class)
PS Wingardium Leviosa feather
Charmbook writers and developers
Delfina Crimp · Miranda Goshawk · Jarleth Hobart · Basil Horton · Randolph Keitch ·
Levina Monkstanley · Orabella Nuttley · Mnemone Radford · Scarpin · Elliot Smethwyck ·
Felix Summerbee · Fred Weasley · George Weasley
Professors Fortinbras · Filius Flitwick
Textbooks The Standard Book of Spells · Achievements in Charming · Quintessence: A Quest
Charms studied at Hogwarts
Banishing Charm (Depulso) · Cheering Charm · Cistem Aperio · Colour Change Charm (Colovaria) · Dancing Feet Spell (Tarantallegra) · Descendo · Disillusionment Charm · Eradication Spell (Deletrius) · Engorgement Charm (Engorgio) · Exploding Charm (Bombarda) · Fire-Making Spell (Incendio) · Freezing Charm (Immobulus) · Freezing Spell (Glacius) · Full Body-Bind Curse (Petrificus Totalus) · General Counter-Spell (Finite Incantatem) · Growth Charm · Hardening Charm (Duro) · Knockback Jinx (Flipendo) · Leg-Locker Curse (Locomotor Mortis) · Levitation Charm (Wingardium Leviosa) · Locking Spell (Colloportus) · Locomotion Charm (Locomotor) · Mending Charm (Reparo) · Memory Charm (Obliviate) · Muffliato Charm (Muffliato) · Nonverbal spell · Pack Charm (Pack) · Red Sparks (Vermillious) · Reductor Curse (Reducto) · Scouring Charm (Scourgify) · Seize and Pull Charm (Carpe Retractum) · Severing Charm (Diffindo) · Shrinking Charm (Reducio) · Silencing Charm (Silencio) · Slowing Charm (Arresto Momentum) · Skurge Scouring Charm (Skurge) · Softening Charm (Spongify) · Spell for growing legs · Substantive Charm · Summoning Charm (Accio) · Tickling Charm (Rictusempra) · Unlocking Charm (Alohomora) · Vinegar into Wine · Wand-Extinguishing Charm (Nox) · Wand-Lighting Charm (Lumos) · Water-Making Spell (Aguamenti)
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