well u cant.... the only way is if u have a GameShark or its for PC. so u can put in a code and it will pop up. any Pokemon u want. it could be giratina even though its not in the game.
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Well, you can, but it will take damn long. When Professor Birch tells you to take a Pokemon out of the bag, you walk up to the bag and save. Then, you pick the Pokemon you want, if it isn't a shiny Pokemon, reset the game and repeat, but remember it will take damn long.
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No, simply save your game right before you choose which starter pokemon you want. But be warned you can spend several thousand restarts searching for a shiny starter..
Yes it is possible, but it 100 % pure luck.
there is no shiny stone in Pokemon ruby it's only in sinnoh
Luck. You have a 1 in 8,192 chance of your starter Pokemon to be Shiny.
Yes two ways by constantly grabbing your starter and if its not shiny turn off the game and try again or constantly breed your evolved starter with a ditto until the baby is shiny.