Since the dawn of Pokemon, certain Pokemon Species have only been able to evolve when an Evolutionary Stone is used on them. This number has grown more and more as new Evolutionary Stones were created. In Pokemon Sword & Shield, there are ten different Evolutionary Stones to collect. In total, there are 27 Pokemon within The Galar Region Pokedex that need an Evolutionary Stone in order to evolve (some of these species previously didn't one to do so).
Thunderstone Evolutions
Pikachu -> Raichu
Eevee -> Jolteon
Charjabug -> Vikavolt
Moon Stone Evolutions
Clefairy -> Clefable
Munna -> Musharna
Fire Stone Evolutions
Vulpix -> Ninetales
Growlithe -> Arcanine
Eevee -> Flareon
Ice Stone Evolutions
Alolan Vulpix -> Alolan Ninetales
Eevee -> Glaceon
Galarian Darmuka -> Galarian Darmanitan
Leaf Stone Evolutions
Gloom -> Vileplume
Eevee -> Leafeon
Nuzleaf -> Shiftry
Sun Stone Evolutions
Gloom -> Bellossom
Cottonee -> Whimsicott
Helioptile -> Heliolisk
Water Stone Evolutions
Shellder -> Cloyster
Eevee -> Vaporeon
Lombre -> Ludicolo
Shiny Stone Evolutions
Togetic -> Togekiss
Roselia -> Roserade
Minccino -> Cinccino
Dawn Stone Evolutions
Kirlia (Male) -> Gallade
Snorunt (Female) -> Froslass
Dusk Stone Evolutions
Lampent -> Chandelure
Doublade -> Aegislash
Now that you know which Pokemon can only evolve by using Evolution Stones, Click Here to learn which Pokemon have Special Evolution Methods!
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