Twilight Basalt is a dark grey to black basalt with Class 5 wear resistance (suitable for all commercial and domestic projects). Match your internal floor to your external flamed finished floor by using our satino finish which is the flamed stone brushed over to a smooth surface despite maintaining the appearance of the flamed texture (stair treads and risers also available ‘off the shelf’. Unlike other basalts, Twilight Basalt contains lime and must be cleaned with an acid-free product such as our Detertwins cleaner. Fine pencil fissures can appear shortly after laying Twilight Basalt. These veins are a normal natural occurrence.