| This is a lore summary, presenting intradiegetic or in-universe information about the subject. For game characteristics and similar data, consult the table on the right. |
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Alien crystals are miscellaneous items which are added to Fallout 3 in the Mothership Zeta add-on.
Variants[]
Large alien crystal[]

Gameplay article:
A small orange crystal that can be found in alien quarters. It serves no purpose other than trade or house decor.
Small alien crystal[]

Gameplay article:
Small green crystals that are worth less than the large alien crystal. They serve no purpose other than trade or house decor.
