The Toadstool Diamonds are 16 Diamonds that have Grand Stars enscipted in them, that belong to the Toadstool Family. They are highly powerful, pure, shiny, and radioactive and can power almost anything or do anything with their unlimited Energy Source. They were discovered by royal ancestors who were explorers. They were looking for a certain energy becon that had been interfering with civil communications. They were found in the Skyworld and taken into Peaches Castle where they were safe until they were stolen by Nia<3.