how to get. go to abberation or a abb cave such as fjordurs abb cave. mine it then use the obelisk to item transfer (dont know what i mean? well there is a tab called items that you can put items into so you can acess them from ALL your single player maps, you can also do this with creatures that are on the terminal just note this will remove saddle and inv so maybe use cryo instead to keep saddle) then get this. you can also get gems from a roll rat. just fight it or run. simple.