Pokémon Pokopia ‘Sableye’s Gem Hunt’ event guide
via polygon.com
Short excerpt below. Read at the original source.
Pokémon Pokopia has an event themed around camping and treasure hunting that features Sableye,titled “Sableye’s Gem Hunt.” You’ll need to help Sableye collect red crystal fragments to exchange for treasure and camping decor that you can use to flourish your island.