there is no moon crystal.
Chat with our AI personalities
GET FOSSIL FROM SCIENTIST IN MT MOON
Red is not in Mt. Moon; he is at the top of Mt. Silver.
mt. moon is between pewter city and cerulean city
Mt Silver.
Play through until you beat the Elite 4 for the first time, then when you arrive in the Kanto region, make your way up to Pewter Town. From there, take the East road, follow past all the trainers, and go inside the mountain entrance at the end of the path. Once you get in there, you are in Mt. Moon! Yay!