This durable, flexible Mosaic Blue Coaster is made from silicone and evokes the meticulous art form of mosaic, in which the layout prototypes were jealously preserved and transmitted from the "maalem"--the master--to his apprentice. These cut stones, called zelliges, follow an aesthetic order and harmonious positive-negative play, leaving the general public in perpetual meditation. Measures 3.5" by 3.5".