fall down the holes in the following order: up, left, right, down.
One you get by eavesdropping on the two rockets at the cave entrance near the base of Mount Ember. The other one you get by cutting down the entrance to dotted hole on six island, and then getting to the end. Someone will steal the sapphire, but tell you the second password as well.
The Dotted Hole is in the center of Ruin Valley, which is at the south-westernmost part of Six Island. To enter it, you need to assist Lorelei in defeating Team Rocket in Icefall Cave on Four Island; once you have done that, have a Pokémon use Cut on the door to open it.
He is at the end of cerulean cave.
You get it in the dotted hole,6th island.I think you must do something to move the scientist from there and you use cut on the doors,you enter and must solve a simple puzzle and then you get the sapphire,but a scientist gets it first,then you have to go to the team rocket secret's base,battle and get to the end,where you have to battle the scientist and he returns the sapphire.
At the end of Cerulean Cave.
Beat the elite four.
You need a Pokemon that can use cut firstly. When you get to the front door use the Pokemon that can use cut and use it on the door. Go down the hole then go down the top, left, right then bottom holes and you should end up at the sapphire. Too bad some guy steals it.
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
Yes at the end of cerulian cave
It is called surf. At the end of the safari zone.
at the end!!!! I got a lvl 94 charizard and a lvl 100 hitmontop. beat that!!
That would be Mewtwo which can be found at the end of cerulean cave.