hard stone can be found at dark cave
you need to get a sun stone and use it on gloom
Clefairy......
Magmius or honchkrow
happiny
eevee
its in the edge of the stone
you can get it if u have 2500p in pokeathlon and go to the athlete shop
growlithe & eevee
fire stone
no. the sun stone was introduced in Pokemon gold and silver.
You can't. You need to trade it from Heart Gold, or get the enigma stone through a wi-fi event
onamyte is one