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The Harry Potter Canon

The Hufflepuff hourglass in the Hogwarts Entrance Hall for recording House Points is filled with yellow diamonds (JKR:Tw, Pm).


  • Fred and George gave their mother Molly "a brand-new midnight blue witch's hat glittering with what looked like tiny starlike diamonds" for Christmas in 1996 (HBP16).
  • A sign on the Firebolt in Quality Quidditch Supplies said the ash handle was "treated with diamond-hard polish (PA4).
  • Fleur Delacour describes the Christmas ice sculptures at Beauxbatons as "huge statues of diamond, glittering around ze place" (GF23).
  • When Wormtail heated the cauldron for Voldemort's rebirth, the surface of the liquid "was alight with sparks" as though "encrusted with diamonds" (GF32).
  • The giant crystal bell-jar in the Time Room at the Department of Mysteries gave off a "dancing, diamond-bright light" (OP34)




Old French diamant, from Medieval Latin diamantem


When JKR was eleven, she wrote a series of stories about people who owned seven cursed diamonds (JKR:FAQ).

J.K. Rowling told a fan on Twitter that the Hufflepuff hourglass is filled with diamonds because members of that house are "diamonds in the rough" - a phrase meaning "full of potential."

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Tags: gemstones punishment rewards rivalry rule-breaking rules status yellow