A Borg diamond is a Borg ship which has four special weapons, such as overriding an enemy ship or destroying enemy ships. It is shaped like a diamond, and a ship of this nature is used by the Borg Queen. (ST video games: Armada, Armada II)

The Borg diamond was heavily armed and well protected and like all Borg ships it was capable of transwarp speeds. A Borg diamond was present when species 10026 was assimilated in 2375,Seven of Nine and the Borg Queen were aboard while the assimilation took place. Later, a Borg diamond pursued the Delta Flyer after it escaped from the Unicomplex after rescuing Seven of Nine. The Borg vessel was destroyed when the USS Voyager fired photon torpedoes and collapsed the transwarp conduit it was traveling in. (VOY episode: "Dark Frontier")

Borg starship classes
	assembler • assimilator • collector • colony ship • command ship • cube • detector • diamond • fusion cube • harbinger • harmonic defender • hypercube • interceptor • obelisk • pyramid • rectangle • scout • sphere • tactical cube • tactical fusion cube • wedge • workbee

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