Black Limestone Cobbles and Setts 100x100x50 From £42.59/m2Black limestone cobbles and setts 100 x 100 x 50 offer a classic hand cut finish that brings natural character to any outdoor project. Their gently textured surface provides reliable slip resistance, while the smooth top face creates a comfortable feel underfoot ideal for patios, walkways and traditional garden spaces. The deep black tone, often referred to as Midnight Limestone, adds timeless appeal and pairs well with both contemporary and heritage