fight him ye i trick yu
celio is on one island im pretty sure...
Beat the elite four and help celio fix the machine
give it to celio
Celio is the man standing right by the giant machine in the One Island Pokemon Center you can't miss him.
you need to become Pokemon League Champion then help Celio on One Island to get his computer running
Celio in one island has it. When celio askes you to get a sapphire he will gove you it
You give it to Celio
in the Pokemon league on mondays
celio is on the first island you can go there after you win at the cinabar gym, bill will be wating for you outside the gym
Celio is a t ONE island he's the guy standing next to the trading machine at the Pokemon hospital
If you mean Celio, his in one island pokemon center.
Get the crystals on 1,2,3,4,5,6,7 islands and bring to Celio.