You can trade them for evolution stones eg. yellow shard = thunderstone
Catch Clamperl, Chinchou and Relicanth most of these Pokemon hold shards
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.
Use the move dive to go underwater to find shards in the seaweed.
Blue shards are found underneath the water while diving.
Red shards are found underwater.
Green shards are found underneath the water (or in the sand on islands) while diving.
you give a guy a certain amount of shards and he will trade it to u
If you have shards, trade them with the treasure hunter on Route 124.
Yellow Shards and the other color shards are used for trading with NPCs for items or moves. For example in Pokemon Ruby, Sapphire and Emerald they are the main source of evolution stones.
If you mean Pokemon Ruby, Sapphire or Emeraldm, they can be traded with a hunter on an island halfway between Lilycove City and Mossdeep City. Pokemon Platinum shards are used to tutor moves to Pokemon on Route 212, Snowpoint City, and the Survival Area.
everywhere