This product comes in thermal top finish with sizes being 4x4, 8x4, 9x5 inch, with a thickness of 2", 3" & 4" and edges sawn.
Basalt is freeze resistant and used for a wide variety of purposes including crushed aggregate road base, concrete aggregate, asphalt pavement aggregate, railroad ballast, filter stone in drain fields, and may other purposes. However, the most attractive applications of this gorgeous dark grey stone can be found in paving stone and dimensional stone.