Textured glazes are those glazes that have either visual texture or physical, tactile texture. Visual texture can generally be defined as color changes within a glaze. These changes can be subtle or fairly bold.
Visually textured glazes are often transparent (even if saturated with color) or semi-transparent. Visually textured glaze may be caused by glaze coat thickness, glaze composition, the interaction of the glaze with the clay body's composition, or a combination of factors. Some glazes are more likely to show visual texture in oxidation or reduction kiln atmospheres.
Most physically textured glazes fall into the matte surface range, although some with largish bead-like areas (broken away from each other by crawling) can have a gloss surface.
Visual texturing can occur when two glazes overlap, as well as within a single glaze.
Tactile texturing ranges from lichen-like textures to heavily broken and rough surfaces.