you don't get rayquazza in Pokemon diamond the only way to get rayquazza is to transfer one from Pokemon ruby Sapphire and Emerald to Pokemon diamond
You actually cant physically catch a rayquazza in diamond or pearl. If you have diamond or pearl and you want a rayquazza you need to get pokemon emerald capture it on there and then migrate it onto your peral or diamond game. Cheers boiz and gyrls.
You can use a action replay to hack for it or trade it from another game.
To my knowledge it is impossible, unless of course you use a action replay or just transfer it over using PalPark
You have to transfer it from from GBA by Pal Park. I found the info in http://www.serebii.net/pokedex-dp/384.shtml
anyways its rayquazza no rayquazza does not evolve and does not evolve from anything! hope this helped :}
Rayquazza wasn't made until more than a decade after Pokemon Blue was made.
Dragon/Flying
You can't catch Rayquaza You have to use poketransfer from emerald ruby or sapphire to diamond, pearl, platinum,heart gold, or soul silver and transfer to pokemon black
Yes every Pokemon can be shiny.
You beat the Pokemon league and then on the tv it appears that a flying Pokemon appears which is Rayquazza and its level 70 and then you find it on top of the Sky Tower and catch it
groudor,rayquazza and more
It is Lugia some say it is Dialga or Rayquazza.