Dwarf star alloy

Dwarf star alloy was an alloy obtained from white dwarf stars. It was very expensive and very heavy. It was impregnable to any form of particle (DW: Day of the Moon) and was the only material that could hold time sensitive species. (DW: Warriors' Gate)

Rorvik's spaceship was made from dwarf star alloy and required very large engines in order to achieve flight. (DW: Warriors' Gate)

Cadwell had a gun that fired pieces of dwarf star alloy. (PDA: Fear of the Dark)

Roz Forrester used dwarf star alloy to crush an N-Form. (NA: So Vile a Sin)

Father Kreiner had a glove made of dwarf star alloy. (EDA: Interference - Book Two)

Father of Mine was constrained with a chain made from dwarf star alloy. (DW: The Family of Blood)

The United States of America's military constructed a cell of dwarf star alloy in Area 51 to hold the Eleventh Doctor, though its true purpose was to give the Doctor and his friends a safehouse hidden from detection by the Silence. (DW: Day of the Moon)