Diamond

Obtaining
 can be obtained by destroying the spire in the middle of alien bases. Once you destroy it, a storage crate will drop and it may contain diamonds. The aliens occasionally destroy the crate, however. - needs checking.

It can also be found in natural clusters and obtained by Mining.

Dropped by

 * Harpia Warbird
 * Red Korona
 * Paja Battlebot
 * Paja Battledrone
 * Puja Battlebot
 * Unidentified
 * Central AI

Sold by

 * Hitomi Amasawa

Replicator Script

 * Sold by Hitomi Amasawa for 27

Uses
 can be used as building material.