Board Thread:Speculation House/@comment-14138255-20151213162620/@comment-26397825-20151225072432

BlissCloudz wrote: Yes, its been confirmed. If you look on the Dust article on this wiki, you'll find it listed, and then links to the sources that confirm it. Ruby wasn't the one using the gravity dust, that was Weiss. She made a path of glyphs up the cliffside and combined them with gravity dust to help Ruby run that angle. The recoil of Cresent Rose was giving her extra speed and power, and in addition to that she was using her semblance. I'm fairly certain Ruby was also using her semblance, which gives her a springboard effect and would assist in pushing her up the hill. Her semblance mixing with Weiss's semblance is actually the reason why Weiss's glyph turns red when Ruby is being held in place; it's Ruby's aura colour.