On firered how do you get Celio to ask you to find the ruby and Sapphire gems?

You must collect 60 pokemon in your pokedex then talk to the proffesor. Then go to one island and talk to cielo in the Pokemon Center. He will ask you if you could find Ruby for him on one Island. Hope This Helps!!! If you need to know anything else dont hesitate to ask. Ive beaten all other pokemon games accept for Diamond and Pearl.
Celio is located on one island you'll find him in a big orange building (at least i think it's orange)