Floating Blue Description In the city, the soft, blue sky is punctuated by buildings that appear to be made entirely of glass. Aptly named, this mix features the distinctive blue float glass often used in these lofty spaces. Glass source story Inevitably, manufacturing glass produces waste. Too often, that waste ends up in the landfill. We like to keep this peaceful color out of the waste stream. You see it here, floating freely in this Vetrazzo mix.