Thirstystone Coasters are a beautiful functional home decor accent that bring a natural element into the home. Each set of four coasters is made in the U.S.A. cut from natural solid sandstone and comes in a sturdy twopart gift box. This coaster set comes with a coordinating metal holder. Thirstystone Coasters are true Made in America Products. Thirstystone coasters are completely manufactured printed and packaged right here in the U.S.A. The coasters are printed with a patented process that allows liquid to absorb through the ink. The artwork will not rub off. Thirstystone coasters are stain resistant and can be used to effectively absorb drips from your drinks for years to come. Each coaster measures 4 inches in diameter. Cork Backing.