Sartor

From Tardis Wiki, the free Doctor Who reference

Sartor was a human colony world rich in diamonds, which the colonists mined and used for trade. Sartor was attacked by a Quarsian pirate ship and their android stormtroopers to steal the diamonds, but the attempted theft was defeated by the Tenth Doctor. (COMIC: The Diamonds of Sartor / Quarsian Mission / Android of Death)