You get it by gaining the National Pokedex and returning to your mom,which is in your house.
I hope you find this useful.
an amulet coin is in amity square in the left ruin go in the middle in the furthest you can go then turn left but dont go left and click
In Red the Amulet Coin item does not exist.
put the amulet coin on any Pokemon and you may have more coins
You give it to your Pokemon and if you battle a trainer, you get double the prize money, like a luck insence
You can find an Amulet Coin in the Goldenrod Department Store basement.
An oak aide in the big building west of celadon city has amulet coin.
The amulet coin is in castelia city there are 3 dancers (Pokemon trainers) and if you defeat all 3 at the fountain the one in the middle will give you the amulet coin. The trainers have pansage, pansear and panpour.
it increases money gotten from trainer battles (npc trainers)
The amulet coin is in the basement of the pokemart in goldenrod while you defeat the rockets that take over the radio station
The amulet coin is in the Goldenrod Department Store Basement (you get to it through Team Rocket's hideout in the underground path).
The amulet coin is in the east gate of amity square, The Amulet Coin is obtained in Hearthome city's East Entrence of Amity Square (must be east). Enter and go to the third ruin all the way down the straight path you can take and pick up the PokeBall with the Amulet Coin containing it. Hope this helps.
i would say the best item is the berry that awakens you from sleep but I think in diamond or pearl Draco plate its behind the statue in enterna city but in emerald amulet coin if he's your first Pokemon in your party amulet coin however, if this question pertains to breeding compatibility, rayquaza cannot be bred.