Azbantium

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Revision as of 23:38, 13 April 2016 by PicassoAndPringles (talk | contribs) (Undo revision 2028481 by 50.249.204.21 (talk) speculation)

Azbantium was a mineral 400 times harder than diamond. A twenty feet thick barrier of it appeared within the Twelfth Doctor's confession dial. In an effort to escape his confinement, the Doctor wore it away by pounding at it (TV: Heaven Sent) over a period of four and a half billion years. (TV: Hell Bent)

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