The irregular shape and rough surface of Stone Design helps you create complete rustic interiors, or only a accent wall. Vary with the grout color to match the stone or the color of the fireplace. Stone Design indoor wall decoration panels are made of high quality and durable gypsum. Stone Design is durable, and does not discolor. The subtle variations in color and shape gives your indoor wall that real stone look. The light weight panels are easy to install with either a regular thin set mortar (tile adhesive), a molding construction adhesive or a drywall adhesive. After treatment with a plaster sealer this stone is more easy to keep clean.