Moon Stones in Pokemon Let’s Go are like the other Evolution Stones in that they will allow you to evolve certain Pokemon. Unlike the other evolution stones in the game, you can’t just purchase the Moon Stone and they are used to evolve some favorites like Jigglypuff, Nidorino, Clefairy, and others. To get Moon Stones in Pokemon Let’s Go you’re going to need to go to Mt. Moon to begin your search.
Keep an eye on your partner for the location of the Moon Stone
There are multiple Moon Stones hidden in Mt. Moon and they will respawn on a daily basis. You’re going to use your partner Pokemon, either Pikachu or Eevee to find the Moon Stones in Mt. Moon. Keep an eye on the tail of Pikachu or Eevee while searching the area. Look for craters in particular but they are also located in other areas. Pikachu or Eevee will wag their tail more quickly when you are close to the location of a Moon Stone. Just remember that the faster they are wagging their tail the closer you are to the stones.
Other stones can be found for free in Pokemon Let’s Go. You can find a free Ice Stone in Pokemon Tower. There’s a free Leaf Stone in the Virdian Forest. A free Water Stone is located on Route 12. If you’ve got some extra Poke Dollars, you can always head to the Celadon City Department Store and head to the 4th floor to buy Leaf, Fire, Water, Thunder, or Ice Stones.