From Starbounder - Starbound Wiki
Prism Crystal is an object unobtainable by players through normal means. This item's information is present in the game files, but not intended by developers to be in players' possession.
Prism Crystal is a decorative object found in prism mini biomes. It appears there is a humanoid trapped inside this crystal.
When illuminated with a light source it casts a rainbow spectrum of light, and when mined the crystal will shatter.
|Apex :||There appears to be a humanoid figure inside this crystal.|
|Avian :||Someone, or something, is trapped inside this prism.|
|Floran :||What is inssside? Is it alive?|
|Glitch :||Horrified. There appears to be a person inside this prism.|
|Human :||There's someone inside. It's a prism prison!|
|Hylotl :||An ominous dark shape resides within this crystal.|
|Novakid :||If I'm not mistaken, there's a guy in there!|
- Glad Giraffe: Added