Blue shards are found underneath the water while diving.
they come from the clamperl
They can't be bought. You can find them underwater, or attached to wild pokemon. Chinchou have yellow shards, Clamperl have blue shards, Relicanth have green shards and Corsola have red shards.
not possible
The color shards you can find in Pokemon Platinum are Red, Blue, Green, and Yellow Shards.
Pokemon blue to ruby is sapphire.
nothing
On Pokemon platinum, you cannot move or migrate Pokemon from Pokemon silver or Pokemon blue version. It can only be done from the Gameboy advanced games. Those are Pokemon Ruby, Sapphire, and Emerald version.
dork...
There are four shards in Pokemon Platinum- red, blue, green and yellow. They can all be found in the Underground.
To get stones in Pokemon ruby you have to go to the shard hunter (surf left from Mossdeep). He will trade you stones for shards. You have to find shards by diving in the waters around route 124 (right around his house). You can use your itemfinder to find them, but they're usually just in the spots that are lighter than the surrounding area. Shards can also be found on Pokemon in the wild. The easiest way to get them is to dive, find Pokemon in the grass, and then use the move Thief on them, which will steal whatever they're holding. Relicanth- green shards Chinchou- yellow shards Clamperl- blue shards Corsola- red shards The type of stone you get from the shard hunter corresponds to the shard's color. For example, green shard=leaf stone, red shard=fire stone, etc.
Blue Shard- Route 124; Wild Pokemon. Green Shard- Route 126; Wild Relicanth. Red Shard- Route 124; Wild Pokemon. Yellow Shard- Route 126; Wild Pokemon.
You can exchange them for water shards at HUNTERS HOUSE near mossdeep city. You can give your water stone to staryu and it will evolve into Starmie! NOTE: THIS IS FOR POKEMON RUBY! -Sammi out! :P