| NotesImages | Dilithium Crystals |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TOS | 3 | Elaan of Troyius | |
| 2 | TOS | 1 | Mudd's Women | |
| 3 | TNG | 1 | Skin of Evil | |
| 4 | TNG | 6 | Relics | |
| 5 | TNG | 7 | Force of Nature | |
| 6 | TNG | 2 | Peak Performance |
| Series : | TOS Season 3 |
| Episode : | Elaan of Troyius |
| Series : | TOS Season 1 |
| Episode : | Mudd's Women |
| Series : | TNG Season 1 |
| Episode : | Skin of Evil |
| Series : | TNG Season 6 |
| Episode : | Relics |
| Series : | TNG Season 7 |
| Episode : | Force of Nature |
| Series : | TNG Season 2 |
| Episode : | Peak Performance |
| © Graham & Ian Kennedy | Page views : 17,300 | Last updated : 3 Apr 2014 |
