You go to a house in Driftveil city and talk to a lady in white she will ask you to show her a Pokemon with a certain move that changes daily, and when one of your Pokemon that knows the move is in your party she says "Oh! Your (Pokemon's species name) can learn (What move she wants to see)! You went to all the trouble of teaching it. Here is a token of my appreciation, please don't hesitate to accept this." and she gives you a Heart Scale.
you can dig it out from underground.
Yep.
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.
When you get to Blackthorn City go to the move deleter's house there are two in the front one is the move deleter and the other is the move restorer give him a heart scale and he will teach your pokemon a move was alredy deleted
The lady you think is in Mistralton City, and you need 1 heart scale. She is also near the Pokemon Center. She is the one who helps you remember a move.
Heart Scale does not evolve any Pokemon. You trade it to a maniac who will make Pokemon remember moves. In black and white, the maniac is in Mistralton city.
In Driftveil, there is a lady who will give you one Heart Scale a day if one of your Pokèmon has the move she wants to see. Her house on on the far left, just above the Driftveil Market.
catch a luvdisc, most of the time they will be holding a heart scale. fish for them. no, you can't buy a heart scale.
The heart scale is used as a payment for the move tutor, or you can sell them.
Catch a bunch of luvdisc they can hold heart scale.
You can find them underwater and if you catch a luvdisc they may be holding a heart scale.
to get a heart dive
one way to get a heart scale in pokemon black is to go to Driftveil city. Use fly to get there and then go left from the pokemon center, there a girl will ask you to show her a pokemon that knows a certain move. Find a pokemon that knows the move and in return she'll give you a heart scale.
In Pokémon Crystal (GBC), there is no Heart Scale item. The Heart Scale item was introduced to the Pokémon video games in Generation III (3) (Ruby/Sapphire/Emerald). Thus, you cannot get the Heart Scale in Crystal. There is no Generation II-III trading, so there is no possible way to use the Heart Scale in Pokémon Crystal Version, sorry!
in the underground
There's a man in Fallabur town who will re-teach a Pokemon a move for a heart scale. But you must find a heart scale, they are in several places on the map but are mostly in or near water.
move tutor house one heart scale - one move taught