SilverPowder
Depends on which game your playing... If your playing DPPt it increases the power of special moves. If your playing RBY, GSC, RSE or FRLG it increases the power of moves whose types are classed as special (fire, water, psychic, dark, ect.)
No Pokemon evolves by hard stone. Hard stone just increases the power of rock type moves.
It boosts the power of grass-type moves
it improves the power of ice type moves
Nincada is a fantastic Pokemon to use these moves on. Not only can it learn Flash and Rock Smash, but also Cut, Dig, and Secret Power which are all moves that are required later on.
It increases the power of fighting type moves. POKEMON AMATEUR
NeverMeltIce and Icicle Plate, both increase ice moves power by 20%.
the spooky plate increases the power of ghost-type moves if the user is holding it.
Depends on which game your playing... If your playing DPPt it increases the power of special moves. If your playing RBY, GSC, RSE or FRLG it increases the power of moves whose types are classed as special (fire, water, psychic, dark, ect.)
hidden power
It's a held item that increases the power of Water-type moves.
There is a space globe at the very very top with the Arceus statue. It increases the power of all moves by 50% (the power of the move + 1/2) with no side effects.
No Pokemon evolves by hard stone. Hard stone just increases the power of rock type moves.
It boosts the power of grass-type moves
Unknown do not learn new moves. Hidden Power is its only attack.
Unown can't learn other moves besides Hidden Power.
none a hard stone powers up moves -> Hard stone power ups rock type moves, it doesn't cause a Pokemon to evolve in anyway.