Two, footsteps wearing tennis shoes stepping on a gravel surface scattering small stones.
Rattle of a hand full of stones or small pebbles being dropped into a plastic container.
Skimming a stone above water
Click, or clack sound. Marbles contacting each other.
Dropping a cluster stones onto a hard surface, light impact
Dropping stones onto a hard surface, heavy impact
Dropping a stone onto a soft surface, heavy impact
Sound of a cluster of stones being dropped onto a soft surface, medium impact
Stones fall on metal. Rattle, dull sound.