Vst Building Materials Production Jsc,., based in Viet Nam, lists Basalt Stone Customize Size for Building Project on Global Trade Plaza. This product is described as a mafic eruption rock with specific geological and physical properties, including a density of 3.0 gm/cm3, chemical composition with 45-55% silica, and typical black or grey colors. It is available in various forms such as slabs, tiles, cubes, palisades, capstones, and fountains, with multiple finish options including antique, flamed, honed, polished, and others. The stone is noted for use in indoor or outdoor building projects.