The rarest Pokemon in Pokemon Diamond are the Pokemon you can not get in
Pokemon Diamond, such as the Kanto, Johto, and Hoenn starter Pokemon (Bulbasaur,
Cyndaquil, Mudkip, etc.), legionaries [Lugia, Ho-oh (Event Pokemon such as Deoxys
aren't really rare), etc.], etc. Pokemon that are migrated from Pokemon GBA games are
also rare Pokemon in Pokemon Diamond.
Hope this helped!
-Pyrenix
three words mewtwo and mew
The true hardest Pokemon to catch are: Deoxys, Mew, Celebi, Jirachi, darkrai, shaymin, Ho-oh and lugia
that is because they are event Pokemon and the events are over, so to get them you need cheats, or trade them with someone who has, and they may not give them up easily.
The most rarest Pokemon card is original set kahangaskhan. Worth more then $1000 a piece.
A red diamond is probably the rarest colour for a natural diamond. Flawless diamonds are the rarest in clarity, and large diamonds weighing in excess of 20 carats are rare.
The rarest Pokemon is Dialga
You got to go to iron island and at the end of it you find it
A red one
the red diamond
Rubies are considered to be the second rarest gem. (The diamond is the first rarest gem)
it is a red diamond
its a RED DIAMOND only about 10 of them exist!!!!!!!!!!!!!!!!!!!!!!
The starter Pokemon or spritomb
Arceus Shaymin
Red diamonds - are the rarest and most expensive.