[@pyroman][@Akayaofthemoon] Yeah there is.  It goes Lawful/Neutral/Chaotic and Good/Neutral/Evil, a character can be a combination of any two from those groups.

And okay, so here's what I have so far:

Aquamarine: Neutral Good

Chromite: Lawful Neutral

Emerald: Neautral or Chaotic Good

Spinel: True Neutral