For the most part Pokemon Go keeps the same requirements and systems as found in other Pokemon games, but every now and then it mixes things up. One such instance is with the Sinnoh Stone, a new addition to Pokemon Go for evolving classic Pokemon into their new 4th generation evolutions.

Pokemon Go is no stranger to evolution through items - we've seen evolutions involving items like the Sun Stone, King's Rock and Metal Coat items - but the Sinnoh stone is different in that it's an all-new item for Pokemon Go.

Pokemon Go Sinnoh Stone: how to get a sinnoh stone for evolution

The Sinnoh Stone is an all-new item in Pokemon Go, though mercifully it's obtained in a set, reliable way - and unlike other evolution stones, you don't have to rely on the random chance that it will crop up as a field research mission reward or drop from a Pokestop.

In order to get your hands on a Sinnoh Stone, you simply need to complete seven days worth of Field Research rewards. It doesn't matter what missions you're actually undertaking to get there - you simply need to complete seven days worth of quests, a regular goal for trainers anyway in catching that month's limited-run field research Pokemon Encounter. When you do this, there's a chance a Sinnoh Stone will drop as part of the reward. That means you've got four chances a month to do this if you're fastidious about those field missions - and then you also have the low chance of a drop from a Pokestop.

The Pokemon Go Sinnoh Stone is likely to become available through other means later on, but for now this is the only way to obtain it..

Pokemon that evolve using the Sinnoh Stone in Pokemon Go

As you'd expect, the Pokemon Go Sinnoh Stone allows classic Pokemon from previous generations to evolve into their new generation 4 forms. That also means these new evolutions have finally arrived into Pokemon Go. Let's go over how it all works, starting with what Pokemon you can evolve. The following Pokemon can currently be evolved into all-new Sinnoh-region forms thanks to the Sinnoh Stone - though you'll need candy too.

Below, here's a list of who evolves, what from, plus how much candy will be needed alongside that Sinnoh Stone.

Further gen 4 evolutions that likely use the Sinnoh Stone in the future

In addition to the Pokemon listed above, there's actually a handful of further new Pokemon that also evolve from classics that as-yet are currently unaccounted for in Pokemon Go. We've listed them before in our full guide to the Pokemon Go gen 4 Pokemon list, but for the sake of expedience here's a list of the remaining gen 4 evolutions that you might want to stockpile Sinnoh Stones towards.

It's difficult to fully know what will happen in Pokemon Go for these remaining evolved forms - some are Eevee Evolutions and so probably won't require stones. The evolutions above have typically required stones or specific methods in the main Pokemon Games - so it remains to be seen if all the remaining evolutions from gen 4 will also require a Pokemon Go Sinnoh Stone. Excluding the new Eevee Evolutions Leafeon and Glaceon, here's the remaining gen 4 evolutions...

• Magnezone (evolves from Magneton)
• Lickilicky (evolves from Lickitung)
• Tangrowth (evolves from Tangela)
• Ambipom (evolves from Aipom)
• Yanmega (evolves from Yanma)
• Mamoswine (evolves from Piloswine)
• Gallade (evolves from Kirlia)
• Probopass (evolves from Nosepass)
• Froslass (evolves from Snorunt)