Each Flat Earth Tile is individually unique, although designs and sizes are standardized. They are made with stoneware clay and are suitable for out-door applications. They may be hung, framed or un-framed, or installed with mastic and grout on walls, fireplaces, backsplashes, or countertops. The patterns are raised. The Triptique tiles are glazed with muted Arts and Crafts, or Mission style colors while a variety of colors and finishes are available for all non-Triptique tiles.