Where to use a gold nugget in Pokemon soul silver?

You can't actually use a Gold Nugget in Pokemon SoulSilver. It's a collectible item, not a usable one.

Here's what you can do with a Gold Nugget:

* Sell it: Gold Nuggets can be sold to a Pokemon Center for a good amount of money.

* Trade it: You can trade Gold Nuggets with other players, although they don't have a specific use in trades.

* Keep it as a collectible: Some players like to keep Gold Nuggets as a reminder of their adventures.

There's no way to use a Gold Nugget to evolve a Pokemon, power up a move, or unlock anything special in the game.

Let me know if you have any other questions about Pokemon SoulSilver!