1. Avanti Marble and Granite 3909 Cornell Pl, Frederick, MD 21703 Coordinate: 39.3403,-77.50278 Phone: (301) 874-3900
2. Bramati Marble & Granite 295 Bailes Ln, Frederick, MD 21701 Coordinate: 39.408234,-77.40087 Phone: (301) 682-3340