If you mean evolution stones. You can buy them at the shop in Celadon
You can find evolution stones is various places. If you have beaten the Elite Four, go to the Pokeathlon Dome. In the prizes section, there will be evolution stones. Compete in competitions to earn enough points for the one you want.
You need the National poke'dex
The evolution stones in Diamond/Pearl/Platinum are the water stone, fire stone, thunder stone, moon stone, leaf stone, sun stone, dusk stone, shiny stone, and dawn stone. (Sorry if I missed one) And even though this is the opposite answer, the stone to keep Pokemon from evolving (with or without evolution stones) is the everstone. Hope this helps! :)
OVAL STONES CAN EVOLVE- A HAPPINY TO A CHANSEY THUNDERSTONES- Can EVOLVE A PIKACHU TO A RAICHU DUSK STONES-EVOLVE MISDREAVUS TO MISMAGIUS OR MURKROW TO HONCHCROW
You buy them at the Celadon Department store. hope this helps
Evolution stones are used to evolve certain Pokemon.
If you mean evolution stones. You can buy them at the shop in Celadon
click pokemart
Evolution stones appear randomly, not just in the center of the screen.
You go to your bag and select one of the evolution stones you have, then you select "Use" and the screen will go to your Pokemon party. Then you select the Pokemon that is able to use that particular stone to evolve. If you don't have any of the particular Pokemon that uses evolution stones to evolve, it won't work.
you cant buy them but get them underground
You can find evolution stones is various places. If you have beaten the Elite Four, go to the Pokeathlon Dome. In the prizes section, there will be evolution stones. Compete in competitions to earn enough points for the one you want.
Evolution Stones can be found by using your mining kit to go underground. Start digging for treasure, and eventually you will find it!
its good to use evolution stones as they make you're Pokemon stronger, but use them carefully, there are only a limited amount of each stone in the game.
No.
You can trade them for evolution stones eg. yellow shard = thunderstone