Blue Black Granite Natural Setts are directly imported from China which are hand dressed. When dry the product is more of a Grey/Blue but when wet it gives you a black look as seen in the pictures. An ideal application would be for courtyards, driveways, paths and patios, when laid on an adequate sub-base and mortar bed. In the UK, this material is named as mid grey granite & blue black granite. These are original G654 chinese granite cobbles
Edges: Hand Dressed / Hand Chipped
Surface: Natural / Riven
Thickness : 40-60mm
Pack coverage is based on when laid using 10-20mm joint