Items, Mega Stones, #796
Altarianite flings for 80 power, a Mega Stones item since Generation VI
PokéAPI item 796 of 2,223, Mega Stones category, Items pocket
Effect, in PokéAPI's words
Altarianite: “Held: Allows Altaria to Mega Evolve into Mega Altaria.”
Games
Altarianite is listed in the text of 4 version groups, first in Generation VI
Game index by generation
IIIIIIIVVVIVIIVIIIIX
Named in
Sun and MoonUltra Sun and Ultra MoonLet's Go Pikachu and Let's Go EeveeSword and Shield