Lucarionite

“A held item that allows Lucario to Mega Evolve into Mega Lucario.”

“One of a variety of mysterious Mega Stones. A Lucario holding this stone will be able to Mega Evolve during battle.”

“One of a variety of mysterious Mega Stones. Have Lucario hold it, and this stone will enable it to Mega Evolve during battle.”

“One variety of the mysterious Mega Stones. Have Lucario hold it, and this stone will enable it to Mega Evolve during battle.”