Natural gravel you may have heard of includes river rock, washed river gravel, and pea gravel depending on the size of the stone. Usually found with a rounded shape and a smoot… See more

Crushed rocks and stones are graded according to the size or diameter of individual … See more

In the United States, naturally formed gravel grades are often classified using the Wentworth scale (or Udden-Wentworth scale). Pebble sizes range from finer to very coarse … See more

Depending on where you live the definition of gravel may have different meanings as originally it was used to describe small pieces of natural stone that have been formed thro… See more