Decorative stone comes a little dirty/gritty. Most stones are screened and not washed at the quarry. Most times 1 to 2 rain events will clean off the coating of grit.
Decorative stone may appear smaller in pictures then in person.
Stone sizes are determined by the screen size used at the quarry. If a stone is screened through a 1-3” screen, it may still have stones 4-6inches because of the angle they fall through the screen.