Description:

Kryptonian Technology

Operator:

- Jor-El
- Isobel Thoreaux
- Lex Luthor
- Lionel Luthor
- Clark Kent

Miscellaneous:

- Created by Jor-El, sent by portal to Earth's past & hidden all over the world
- Also known as the Stones of Knowledge or simply the Elements
- 3 crystals containing all the knowledge of the 28 galaxies
- All 3 were united by Clark on the altar & became the Crystal of Knowledge;
- Used by Clark to create the Fortress of Solitude in the Arctic

Crystal of Air:

Silver Crystal with the Kryptonian symbol for "Air" (House of El)

Crystal of Fire:

Clear stone with the Kryptonian symbol for "P"

Crystal of Water:

Black crystal with the Kryptonian symbol for water (Mark of Transference)