The heart scale is used as a payment for the move tutor, or you can sell them.
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.
Catch a bunch of luvdisc they can hold heart scale.
Hathor had a scale. He had the heart of the mummy and something like a pyramid. He put the heart and the pyramid on the scale. If the heart was lighter than the scale it ment that that specific Egyption isn't good enough to goto the afterlife so it would be sent to Anubis the god of death where he would rot away. But if the heart was about the same he would get to go to the afterlife. That is why they burry all those things with them.
You can find them underwater and if you catch a luvdisc they may be holding a heart scale.
to get a heart dive
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
Well he doesn't learn fire fang and ice fang in levels but he can learn it from a move tutor in route 212 pastoria side using a heart scale.... You get heart scale from mining or migrate a pokemon holding a heart scale from pokemon emerald 2 pokemon diamond/pearl :D good luck guys
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
you can buy a heart scale at the pokeathalon for like 200 pts. but only on certain days
you use it for the move maniac who reteaches your Pokemon a moves for one heart scale