Diamond Array
From Tardis Wiki, the free Doctor Who reference
The Diamond Array was a massive, multi-dimensional space station, created as a base of operations for the Union. It possessed properties that could stabilize regenerative dissonance, as well as a device capable of crushing planets, stars, and systems into diamonds for the Union's collection. It was later destroyed by the War Doctor, River Song, and Susan Foreman while the War Doctor was degenerating. (AUDIO: The Union)
A painting of the Array, resembling a diamond floating in space, was in the Final Gallery. (AUDIO: The Artist at the End of Time [+]Loading...["The Artist at the End of Time (audio story)"], WC: The Artist at the End of Time [+]Loading...["The Artist at the End of Time (webcast)"])
