Mainly you find them undergrond because I found 20
move tutor house one heart scale - one move taught
Select the heart scale in the treasures pocket, then select the put in bag option
You can use heart scales at the Move Re-learner in Pastoria City. He reteaches your Pokémon a move for every heart scale used.
go underground and dig, you'll find it eventually
go to a house in pastoria and this guy if you give him a Heart Scale he will teach one of your Pokémon a move. actually he trades shards 4 moves
you get them under ground wich you need the exploror kit and keep on digging and then walla you got it P.S. the heart scale takes time don't forget
get an action replay and find a cheat for it (i forget what it is called) but there are 2 types, heart scale and master ball. i prefer the heart scale cheat.
go underground and mine until you find one
You use the explorer kit you got from the old man in eterna city to go underground and mine at the sparkling spots on the walls eventually you will dig up a heart scale
To find heart scales on Pokemon diamond/pearl you need the explorer kit to go underground. once you are underground look for cracks inthe wall, and eventully you will find a heart scale in the cracks.
it is a man in a house in canalave city give him a heart scale and he will delete even an hm
it is used in Pastoria city to teach certain Pokemon special moves