| ||Cannot be bought.|
| ||No type|
The Adamant Orb is a sphere made of diamond, an exclusive item for Dialga. It boosts its and type moves, but only for Dialga. It can be sold for 5000P. In Diamond, it can be found behind the location where the player fought Dialga, at the back of the Spear Pillar ruins. In Platinum, it, along with the Lustrous Orb, was found in a small back cave in Mt. Coronet only accessible via waterfalls. In Platinum it can summon the legendary Dialga. In HeartGold and SoulSilver, it can be found at the Sinjoh Ruins. In Pokémon White/Black, it can be obtained from the Shadow Triad on Marvelous Bridge after the stories completion. In Pokémon Black 2 and White 2, the Adamant Orb is found along with the Lustrous Orb and the Griseous Orb in Dragonspiral Tower, right before the player can catch Zekrom.
The move says, If an Active Pokémon has Weakness to metaltype, Dialga's attacks do 20 more damage to that Pokémon (before applying Weakness and Resistance).