The following table contains every evolution item obtainable in Red, Green, Blue, and Yellow and its location(s).
All items have the same locations in all versions of Red, Green, Blue, and Yellow.
| Item | Location(s) | Notes |
|---|---|---|
| Fire Stone | Purchase at Celadon Department Store | An infinite number can be obtained. |
| Water Stone | Purchase at Celadon Department Store | An infinite number can be obtained. |
| Leaf Stone | Purchase at Celadon Department Store | An infinite number can be obtained. |
| Thunderstone | Purchase at Celadon Department Store | An infinite number can be obtained. |
| Moon Stone | Mt. Moon 1F | 5 total can be obtained without glitches. |
| Mt. Moon B2F (Hidden) | ||
| Route 2 (Requires Cut) | ||
| Rocket Hideout B2F | ||
| Pokémon Mansion 1F (Hidden) |