There are two ways to get an Ice Stone in other Pokémon games, though:
* Trading: You can trade with another player who has an Ice Stone.
* Finding: Some games have specific locations where you can find Ice Stones, like in the wild or by defeating certain trainers.
If you're playing Soul Silver, you'll need to rely on other methods to evolve Pokémon that need an Ice Stone, such as:
* Leveling up: Some Pokémon, like Sneasel, evolve through leveling up to a specific level.
* Using an item: Some Pokémon require a different item to evolve. For example, Eevee evolves into Glaceon when exposed to an Ice Shard.
* Trading: You can trade for a fully evolved Pokémon of the type you need.