Picard holding his crystal
A crystal is a regularly-ordered solid mineral.
Data experimented with producing vibrations in a crystal by means of graviton pulses, which Doctor Kila Marr later compared with tapping a crystal goblet. This technology was implemented to make contact with the Crystalline Entity and was later used by Dr. Marr to kill the creature. (TNG: "Silicon Avatar")
Captain Jean-Luc Picard kept a small transparent crystal on the desk in his ready room aboard the USS Enterprise-D. He often played with the small stone when he had to make an important decision. (TNG: "Where Silence Has Lease", "Suddenly Human", "A Matter of Time", "The Masterpiece Society", "Conundrum")
The shapeshifting locket Odo received from the Rakhari Croden was identified by Doctor Julian Bashir as an amalgam of organic matter and crystal. (DS9: "Vortex")
See also
- Albeni meditation crystal
- Data crystal
- Denevan crystal
- Lobi crystal
- Love potion crystal
- Maraji crystal
- Rejac Crystal
- Rhuludian crystal
- Tallonian crystal