Deep Firebrick is an opaque, speckled brick red glaze that breaks translucent where thin. This bold, dark red glaze has a strong presence and layers well under or over other Potter's Choice glazes. This glaze contains black specks that may clog spray guns. Make sure glaze is well-mixed to ensure even distribution of speckles.  Due to the powdered nature of the materials involved with the dry-mix dipping buckets of this product, their respective health information and labels differ from the brushing glazes. *Note that all dry dipping glazes can be difficult to layer. Dipping glazes behave differently from brushing and they require thorough testing prior to layering full piece.