Shiny Rayquaza cannot be caught on Pokémon Diamond unless you cheat.
A black Rayquaza is a shiny so you'll have to be very lucky for the Rayquaza you find to be shiny.
To get a shiny Pokemon try using the poke radar
Once you find a Shiny Pokemon just catch it and it remains Shiny forever.
shiny Pokemon are rare you can find them almost any were but they are super rare
this is a 1 1n 9000 chance, but any wild Pokemon can be shiny. =)
you can't
Shiny Pokemon are random, there is no designated place to find them
You can find a Shiny Stone in Route 228 in Pokemon Diamond and Pearl. In Pokemon Platinum, you can also find a Shiny Stone on Iron Island.
theres a cheat code for action replay that u can get from a youtube video of cheat code website i think its titled "dark raquaza" when u use the cheat, it puts the raquaza in the first spot of the box in ur PC so make sure a Pokemon isn't in that spotit will be very rare that that happens. i do not have that game, i have emerald an yellow. all shiny legendarys are amillion times harder to find then normal shiny pokemon.
No matter what game your playing, shiny Pokemon always appear randomly in the wild.
You can find a Shiny Stone at Route 228 and also at Iron Island
in Pokemon diamond and pearl, its in iron island