How do you get the sahppire?

You'll need Cut in order to do this.

In order to get the Sapphire go to Six Island. Make you way to the Dotted Hole. To get there from the Pokemon Center, Move immediatly right, then move down the stairs.

Make your way down through grass and up some stairs into the canyon. Move down the canyon and down some stairs continue left through grass, and up.

Continue left until you see a wall adn go down untill you see three ways to go; up Downright, and downleft. Go downright and up onto the stairsup through some more grass.

Follow the path up, right, up some stairsright a little more, then downdown two flights of stairs, left about 3-4 steps, and up. Now yuou're in front of the cave. If you press A to the door, you will see three Braille letters.

Press start and have a pokemon use Cut on the door. Enter. Walk forward 4 steps and fall down the hole. Now you'll be in a room with for holes. Take the Up Hole. Then take the Left Hole. Now the Right Hole. And the Down Hole.

There it is, the Sapphire. But Wait! Some proffessor dude took it! What nerve! oh wait, he tells you the other password to the Rocket Warehouse.

You guessed it, he's off to there, and so must you be..... Once you take out all the Admins there, travel up, and get your Sapphire back, but not without a fight! *oy, the perils of being a hero....* anyway, take it back to Celio, and you can Trade with Lanette's PC. Congrats.

Go to Dotted Hole in Ruin Valley on Six Island. But a evil genius from Team Rocket will take the Sapphire and tell you the second password on the warehouse. Find him and he'll give you the sapphire.
(to open the Dotted Hole use Cut and the pattern for it is up,left,right,down)