Coltan (Aptos)

Coltan is a gem used by Aptos. While they are always used as a whole gem, they are actually made up of three Ixiolites (Ixiolite-Mn, Ixiolite-Ta, Ixiolite-Nm). He works with Homeworld, mostly partnered with primarily independent gems like Beta-Apatite (Aptos), and work for such gems as Murchison Moissanite when working under aristocratic gems.