"Catching 'em All" is only half the story in Pokémon Sun and Moon. At some point, you're also going to want to evolve 'em all. This Pokemon Sun and Moon Guide to finding the Ice Stones, and Leaf Stones will tell you all you need to know.
Evolving Pokémon is often just a matter of fighting until your Pokémon of choice levels up high enough to ascend to its next form. But some Pokémon will only evolve if you expose them to certain stones imbued with elemental powers. For instance, the world-famous electric mouse Pokémon Pikachu will only evolve if you expose it to a Thunderstone.
Elemental stones are scattered all over Alola, and they can also be found at the Poké Pelago when your Pokémon explore Isle Aphun after it's been upgraded to level 2. This guide will help you track down all the stones you need to evolve your team. Don't forget to check out our Pokémon Sun and Moon guide for additional hints, tips, and walkthroughs!
A note about stone-based evolution: Most Pokémon that evolve via stones stop learning moves naturally once they've made the change. For example, when Growlithe is exposed to a Fire Stone, it'll no longer learn moves when it levels up. It can, however, still learn moves via HMs and TMs. In other words, sometimes it's best to hold onto a stone for a little while before using it right away.
How to Evolve Pokemon Using Fire Stones in Pokemon Sun and Moon
You can buy this red-hot rock at Konikoni City, find one in Diglett’s Tunnel on Akala Island, or dig one up at Isle Aphun (level 2 or greater). It evolves Eevee into Flareon, regular Vulpix into regular Ninetails, Growlithe into Arcanine, and Pansear into Simisear.
Note that "regular Vulpix and regular Ninetails" refers to non-Alolan Vulpix and Ninetails. Since Alolan Vulpix and Ninetails are Ice-types, they require Ice Stones to evolve.
How to Evolve Pokemon Using Ice Stones in Pokemon Sun and Moon
You can find the Ice Stone in Po Town, and you may also find it on Isle Aphun (level 2 or greater).
The Ice Stone evolves Alolan Vulpix into Alolan Ninetails. It also turns Alolan Sandshrew into Alolan Sandslash.
How to Evolve Pokemon Using Leaf Stones in Pokemon Sun and Moon
You can buy this rich green stone at Konikoni City, or find it on Isle Aphun (level 2 or greater).
The Leaf Stone turns Exeggute into the ridiculous-looking but still-amazing Alolan Exeggutor. It also turns Gloom into Vileplume, Weepinbell into Victreebel, Nuzleaf into Shiftry, and Pansage into Simisage.
How to Evolve Pokemon Using Thunder Stones in Pokemon Sun and Moon
The appeal of Alolan Raichu has many Pokémon trainers scrambling for a Thunder Stone. Don't worry: They're easy to find. You can find one in the Dream Park on Akala Island, and you can also buy them in Konikoni City. If all else fails, you might dig one up on Isle Aphun (level 2 or greater).
By the way: Alolan Raichu breaks tradition and learns a move (Psychic) after evolving via the Thunder Stone.
The Thunder Stone also turns Eevee into Jolteon and Eelektrik into Eelektross.
How to Evolve Pokemon Using Water Stones in Pokemon Sun and Moon
The popular Water Stone gets plenty of use in the watery land of Alola. You can find it for sale at Konikoni City, or you can dig one up at Isle Aphun (level 2 or greater).
Water Stones can turn Eevee into Vaporeon, Poliwhirl into Poliwrath, Shellder into Cloyster, Lombre into Ludicolo, Staryu into Starmie, and Panpour into Simipour.
how to Evolve Pokemon Using Oval Stones in Pokemon Sun and Moon
Oval Stones evolve Happiny into Chansey. You can find an Oval Stone on Akala Island's Paniola Ranch, close to the Pokémon Nursery. You might also find one at Isle Aphun (level 2 or greater).
How to Evolve Pokemon Using Dusk Stones in Pokemon Sun and Moon
The Dusk Stone is necessary to make certain Ghost- and- Dark-type Pokemon evolve. You can find this spooky shard at the Flea Market at the Malie Community Center, though you may also find them at Isle Aphun (level 2 or greater). There's also one near the beach at Poni Wilds.
Dusk Stones turn Misdreavus into Mismagius, Murkrow into Honchkrow, Lampent into Chandelure, and Doublade into Aegislash.
Now that you know a bit about evolutionary stones, learn how to evolve all the new Pokemon in Pokemon Sun and Moon.