Question is in title
Straight from Nugget - Bulbapedia, the community-driven Pokémon encyclopedia
The Nugget serves no practical purpose other than to be sold.
Nobody that buys it for a higher price than the shop or any other uses in insurgence?
nope.
Actually you can use them as an ingredient to la feu. You can make Full restores, Max revives, Max Elixirs and Ethers. Of course you need other ingredients. You might as well just sell your nuggets though.
1 Like
^ forgot about this, actually. Here: https://wiki.p-insurgence.com/Selene_City#Lighthouse