Natural Stone Resources BASOLYMPU1624FT-5BNPC 16" x 24" 5cm Olympus Black Flamed/Tumbled Basalt Bullnose Pool Coping. Natural Stone Resources is a premier importer & distributor of quality natural stones from around the world. Whether you're looking to add coping to your masonry walls, columns, landscape, steps, or pools, the Olympus Black Basalt Bullnose Coping is a beautiful choice. This coping provides a smooth surface and acts as a great finishing accent.