Board Thread:Speculation House/@comment-73.219.112.92-20150809013929/@comment-25555436-20150809014528

First, Cinder only stole Vale's. Pretty sure the other kingdoms are still "safe".

Second, we don't know if it's finite. My headcanon is that it is, but it's like oil: Extremely common, and it's formation is simple, though unlike oil Dust formation doesn't take literal ages.