A Shiny Stone is a type of evolution stone used to evolve certain species of Pokémon:
It can be obtained by crafting it or as a tier 2 special drop. The shards used to craft it can be obtained by using Forage on stone-based blocks with a Normal-type Pokémon.
Unlike other evolution stones, Shiny Stones cannot be made into evolution stone tools or evolution stone armor. However, a Shiny Stone is required to craft a Fairy Gem.