The two go head-to-head in Las Vegas on May 2 after agreeing to the superfight, which is predicted to be the richest in boxing history and has been a decade and a half in the making.
WBC president Mauricio Sulaiman has confirmed that the winner of the fight will be presented with a unique memento.
"For this special recognition I would like to have emeralds or platinum, but everything will be defined during the next weeks," Sualaiman told the WBC's official website.
"This is because of the magnitude of the event, which will be broadcast via TV networks globally."
"It came in a good moment and it will be an emotive event. Both are obviously putting their legacy at stake, to prove who is the best, satisfying an enormous created expectance.
"They are also competing to be considered one of the best 10 fighters in the entire boxing history," he added.