Lascaux Modeling Pastes are suitable for creating reliefs, impastos, and textured or fresco-like surfaces, as well as for embedding collage materials. Paste A is a finely ground paste that dries to a smooth, sandable finish. Paste B incorporates approximately 33% silica sand and dries to a rough surface. Paste C uses larger grains of silica sand for an even rougher texture. All Modeling Pastes come in your choice of three colors — Natural, Black Earth, or Mineral Gray.