Fire Stone:
* Route 36: Found in the tall grass, near the entrance to the Safari Zone.
Thunder Stone:
* Route 34: Found on the beach area just north of the Pokemon Center.
Water Stone:
* Route 36: Found in the tall grass, near the entrance to the Safari Zone.
* Lake of Rage: Found in the water after defeating the Red Gyarados.
Leaf Stone:
* Route 39: Found in the tall grass, near the Goldenrod City entrance.
Moon Stone:
* Route 34: Found on the beach area just north of the Pokemon Center.
Sun Stone:
* Route 39: Found in the tall grass, near the Goldenrod City entrance.
Shiny Stone:
* Ruins of Alph: Found in the ruins, after defeating the trainers and puzzle.
Other Evolution Methods:
* Trading: Some Pokemon evolve through trading, like Machoke to Machamp.
* Leveling Up: Some Pokemon evolve by reaching a certain level, like Pikachu to Raichu.
* Specific Conditions: Other Pokemon evolve based on specific conditions, like Eevee evolving to Espeon or Umbreon depending on time of day.
Remember:
* Evolution Stones are rare, so it's a good idea to save often before using one to avoid accidentally evolving a Pokemon you don't want to.
* It's possible to find more than one of a certain stone in a location, but it's not guaranteed.
Happy hunting!