Marble floor medallion. Czar Floors’ stone medallions are made by cutting natural stone slabs with a waterjet, assembled as tight as possible on a honeycomb aluminum backer. Medallions up to 72” are made as a single piece, ready for installation. Stones are polished and sealed and there are no gaps or grout between individual pieces of the inlay. Overall standard thickness of the medallion is 3/8” to match with typical marble or granite tiles. Stone medallions can be installed with stone, ceramic or hardwood floors. Design can be customized with different stones in various sizes.