Aug 02, 2019 · Sometimes a small amount of acid is mixed in. The tub/barrel is turned over and over again, allowing for the stones to rub against each other. The edges of the travertine are softened and worn down. This feature provides a much more natural, worn look. Like brushed travertine, tumbled travertine has a high-textured finish. The Fabric Fairy is your primary source for boutique and trendy swimsuit fabric, boardshort fabric, organic knit fabric, cotton lycra knit fabric, and knit prints for the entire family!