The Modern “Pea Gravel” Alternative. Granite 89 is a small, washed stone (approx. 3/8″) that offers the decorative appeal of pea gravel but with an angular shape that locks in place better. Because it doesn’t roll underfoot as easily as round river rock, it provides a stable, crunching surface that is comfortable to walk on and looks sophisticated in garden beds. Best For: Walkways, decorative ground cover, pipe bedding, and dog runs. Key Feature: Small size for easy spreading; angular shape for stability.