3/8″ River stone, sometimes called a river jack, is a natural decorative stone, and one of the smaller decorative stones that we sell at Stone Depot. 3/8″ river stone works well in small landscape beds where drainage is important and a more finished look than crushed stone is desired. Stone Depot also sells 3/4″ inch, 1 -3 inch, 2 – 5 inch, 4 – 10 inch, and large river boulders. You can find them here. This product is sold by the cubic yard.