Adamant Crystal

	Pokémon Scarlet and Violet artwork
	Introduced in Generation VIII
Pocket
Generation VIII	Key items (LA)
Generation IX	Other Items (SV)

The Adamant Crystal (Japanese: だいこんごうだま Great Diamond Orb) is an item introduced in Pokémon Legends: Arceus. It allows Dialga to change between its normal form and Origin Forme. It was a Key Item in Generation VIII. It is one of the orbs associated with the Pokémon of myth.

In the core series games

Games	Cost	Sell price
LA SV	N/A	N/A

In Pokémon Legends: Arceus, when the Adamant Crystal is used from the satchel on Dialga, it switches it between its normal form and Origin Forme.

In Pokémon Scarlet and Violet, if a Dialga is holding an Adamant Crystal, it changes to its Origin Forme. Additionally, it boosts Dialga's Dragon- and Steel-type moves by 20%.

Games	Description
LA	When used on Dialga, this large, glowing gem wells with power and allows the Pokémon to change form.
SV	An item to be held by Dialga. This large, glowing gem wells with power and allows the Pokémon to change form.

Games	Finite methods	Repeatable methods
LA	Lake Valor (reward for defeating Adaman to complete Request 89: "The Diamond Clan's Treasure")
SV	Porto Marinada auction (if the player owns a Dialga)