Used Rarely. rolling plan is in the lower 50% of commonly used words in the Collins dictionary
Most travertine is 3/8 of an inch thick but some other larger stones may be a 1/2 inch thick or more. 24x24 is usually 1/2 in thick an can even be as thick as 1in. 24in Travertine is extremely heavy , some pieces can weigh as much as 50 pounds. Thus making it very difficult to install and cut.
Where it is used. Travertine has been mined as a material for construction from the time of the Romans. Most temples, monuments as well as bath areas were made of it. In fact, the Coliseum, which has the distinction of being the largest building in the world, is mainly made of this material.