Pokemon Go's Sinnoh Stone Removed from Weekly Rewards

If you were hoping to land a Sinnoh Stone in Pokemon Go’s weekly Field Research package, you might want to sit down: it seems the items is no longer guaranteed to be a weekly reward.

Multiple accounts from the Silph Road community (per Polygon) have shared that upon getting the seventh stamp and opening the Field Research box, they did not receive the evolutionary stone as one of the items. Instead they received standard items like stardust, Poke Balls, and healing items.

The stone is not completely gone, however, as other users say they’ve received Sinnoh Stones since the initial reports have come out. Niantic has not given any official word as to why the stones have been removed or how frequent they will be appearing, but it seems the stone will not be as prolific as it once was.

For those unfamiliar, the Sinnoh Stone allows Trainers to evolve Pokemon whose evolutions were introduced in the Sinnoh region of Pokemon Diamond and Pokemon Pearl. Examples of these are Electrivire evolving from Electabuzz, Magmortar evolving from Magmar, Honchkrow evolving from Murkrow, and more. Pokemon Go offers no other way to evolve these Pokemon without this item, making it an important part of a Trainer’s inventory.

The Sinnoh Stone was first introduced to the game right before the Thanksgiving holiday as part of the game’s Hatch-a-Thon event, advertised as a weekly reward with no end date announced. If this was an unintended change we’d expect Niantic to switch it back immediately, but we won’t know for sure until the company announces something.

We will update this piece once Niantic shares some details on the future of the Sinnoh Stone, but for now check out our guide on the item if you were lucky enough to get one and want to know which Pokemon to evolve first.