Alegadamente, foi encontrado no site da construção da escola.
Na realidade, quase certamente é esculpida por um pensador ou pedreiro desconhecido e é comprada de fundos escolares quando sai do escritório do diretor ou é legada por um de seus ocupantes em algum momento após a fundação da escola. / p>Traditionally, a witch or wizard’s Pensieve, like their wand, is buried with them, as it is considered an intensely personal artefact; any thoughts or memories left inside the Pensieve are likewise interred with their owner, unless he or she has requested otherwise. The Hogwarts Pensieve, however, belongs not to any individual but to the school. It has been used by a long line of headmasters and headmistresses, who have also left behind their life experience in the form of memories. This forms an invaluable library of reference for the headmaster or headmistress of the day.
The Hogwarts Pensieve is made of ornately carved stone and is engraved with modified Saxon runes, which mark it as an artefact of immense antiquity that pre-dates the creation of the school. One (unsubstantiated) legend says that the founders discovered the Pensieve half-buried in the ground on the very spot where they decided to erect their school.
Quanto à sua singularidade , eles são aparentemente raros devido ao perigo percebido e à exigência de que você seja uma bruxa ou um bruxo poderoso para usá-los efetivamente.
Pensieves are rare, because only the most advanced wizards ever use them, and because the majority of wizardkind is afraid of doing so.
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Inevitably, those with things to hide, those ashamed of their pasts, those eager to keep hold of their secrets, or protective of their privacy, will be wary of an object like the Pensieve.