Board Thread:Speculation House/@comment-6490434-20130410061505/@comment-4010415-20150416201559

Yeah, I've rambled on and on before about how Weiss seems to use her glyphs to manipulate the way ice Dust moves and manifests, in order to choose what shape the ice takes when it forms. She even used a glyph in No Brakes to force the ice to encase Team RWBY, and we all know that she used a glyph in Breach to make a giant ice sword.

And I wholeheartedly agree, it wouldn't make sense for water and ice to be two different Dust types, especially with what I said about dark blue and light blue Dust above.