Our medallions are composed of marble, travertine, granite, slate, even ceramic and porcelain. The shapes we can make are round, square, rectangular, oval and semi-oval Standard thickness of stone medallion is 3/8�. Different thickness will be available upon request. They add a special artistic ambiance to your home and are perfect for entrances, hallways, and can even be used as wall accents. Medallions also serve as a unique way to reflect a visual transition between rooms in your home.