Hakatai Enterprises introduces two new styles, Polished White (pictured) and Tumbled Grey, in the Cobblestone Series. The new styles are designed to be reminiscent of wet and dry river-rocks in a streambed and offer a contemporary and tranquil dÃ'cor to any residential application. Tile sizes vary from 1 1/2-in. by 1 '-in. to 3-in. by 1-in. with a 3/8-in. thickness and each sheet measures approximately .90 square feet.