Board Thread:Episode Discussion/@comment-1599757-20151205162304/@comment-27265101-20151207193556

ChishioKunrin wrote: Phantomlink959 wrote: she may have changed the crystals out They're vials, not crystals, but you have a point. While rewatching Volume 2, I thought I glimpsed green Dust in Myrtenaster while Weiss was wearing her alternate outfit, and I thought "That can't be right..."

She did pack vials of green Dust, as seen in The Shining Beacon. I mean it would be very plausible that she switches out vials, depending on what may be needed for a fight.