Black Basalt Landscape Curbing

Black Basalt Landscape Curbing from Citadel Stone is the definitive natural stone curbstone for projects where structural permanence, zero maintenance, and architectural visual quality are the non-negotiable requirements. Sourced exclusively from Citadel volcanic deposits in the Middle East and precision-cut to exact dimensional tolerances, it combines compressive strength exceeding 30,000 PSI with near-zero water absorption below 0.8% and complete resistance to de-icing chemicals, snowplow impact, and sustained freeze-thaw cycling. The result is a curbstone that outlasts every alternative material it is specified alongside — delivering 50–100+ years of service without sealing, repair, or replacement. Available in five surface finishes from split-face through to honed, and in residential, standard, heavy commercial, and maximum-impact municipal profiles, with full radius and custom fabrication capability for projects of any scale.