Nicolock HOL RAV Raven Holland Stone Brick Paver. Nicolock’s Holland Stone pavers instantly turn your walkway or driveway into a showstopper. Made with our patented paver-shield™ technology, Holland Stone paving stones come in a vibrant array of colors to match any aesthetic. Created with our state-of-the-art manufacturing processes, Holland Stone provides strength and durability to go alongside a pleasing view. These paving stones come with the most color selections in the industry with a deep, rich color throughout the entire paver.