Gravel a natural stone aggregate with a more rounded shape
Gravel is round in shape and is mainly used decoratively in the layout of gardens and parks.
It is sourced from both wet (river beds) and dry (dried-up, former river beds) extraction sites and gets its round shape either from natural erosion or through machine tumbling. You can order gravel up to 56 mm. Need something bigger? You may find that cobbles suit your project better.