We offer a wide selection and stock of our highly popular, top-quality Belgian blue stone wall copings and thresholds. Blue stone wall copings and thresholds should be installed using a suitable flexible adhesive. The joints between stones must be filled with a suitable light gray flexible joint compound. We recommend using our specially selected adhesives and joint compounds for a durable installation of our blue stone. Our Belgian blue stone is cut using a diamond blade, followed by sanding the cut edge with P80 sanding discs. The P80 disc will give a light finish, while the P120 disc provides a slightly darker finish, depending on your needs and the specific Belgian blue stone purchased. Repairing chips in blue stone is easy with the Marmokritt Dark Gray Blue Stone Repair Kit + Hardener (150ml). Cut your own blue stone to size by purchasing the larger available dimensions and the cutting materials and tools listed below! All you have to do is choose your dimensions, thicknesses, and the quantities you need!