* The Diamond Clan: In Pokémon Diamond and Pearl, there's a group called the Diamond Clan that is obsessed with the legendary Pokémon Dialga, who is associated with time. They believe Dialga is the strongest Pokémon, and they are dedicated to searching for him. It's possible you're thinking of something related to this clan.
* The Statue of Dialga: In the game's story, you encounter a statue of Dialga that is seemingly broken and incomplete. This statue plays a significant role in the plot, as it helps to guide you towards finding Dialga.
* The Diamond Building: In the game, the Diamond Building is a large structure in Veilstone City. It's a luxury building that houses a casino, a restaurant, and a department store. There might be statues inside, but none are particularly noteworthy.
If you could give me more details about what you're thinking of, like where you saw it or any other details about the statue, I might be able to give you a more specific answer.