A red one
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
the red diamond
Rubies are considered to be the second rarest gem. (The diamond is the first rarest gem)
'Rare' used to describe a natural diamond describes many diamonds. Red is generally acknowledged as the most rare natural colour in diamonds. Then, the Moussaieff Red, could be called the world's rarest diamond. You can read more about this stone, below.
its a RED DIAMOND only about 10 of them exist!!!!!!!!!!!!!!!!!!!!!!
Arceus Shaymin
The starter Pokemon or spritomb
Red diamonds - are the rarest and most expensive.
Darkrai.
The rarest diamond colour is the naturally occurring red colour. All naturally coloured diamonds have a further grade designation on this scale:FaintVery LightLightFancy LightFancyFancy DarkFancy IntenseFancy DeepFancy VividThe Fancy Vivid colour designation is the most expensive grade.Read more, below.
You can find the bestest,rarest, Pokemon is to go to www.marriland.com/pokemon