Talk:Dust/@comment-72.231.180.129-20131001023337/@comment-3146930-20131001025748

Dust is energy and can be activated accidently (like when Ruby sneezed) or intentionally (like during Glynda's fight). You can normally tell the difference between Aura and Dust, as the use of Dust normally has those Dust-circles appear. These circles can be seen when Crimson unleashes that large blast that turned everything to ash, when Glynda caused an ice storm over Roman's plane, or when Weiss uses her Air-step technique.

However at the time it is unknown how exactly people channel Dust. My theory is that because Dust is energy, a person can channel their own energy in such a way that it activates the Dust and they can use it how they like. Also, so far there hasn't been any kind of confirmation that you need some skill in Aura to use Dust, as Glynda and Weiss haven't shown any kind of skill in it. Crimson may have used Aura to block Ruby's bullets, but that is speculation at the time.