The Diamond is worth 2,000 BP. It is the most valuable treasure item in the game.
There is only one location the Diamond can be found at; in Claire's Episode 4: Metamorphosis, at the outside part of the Tower when the 6:40 countdown starts, there is one Military Box. Inside it is the Diamond.
- Tada, Takuji, ed (2015). BIOHAZARD REVELATIONS 2 ULTIMANIA. Square Enix.