The Albaster rose is a flower that only grows once every hundred years. Its petals are made of ivory. Cedric needed it for his power-plucking potion to extract the magic out of the Amulet of Avalor, so he could use its powers to take over the kingdom of Enchancia, without being punished with a curse. Unfortunately for him, he accidentally put it on and shattered the potion on the ground due to the amulet giving him sticky fingers.