Fossil Nautilus Quartz is uniformly dark grey, has a fine texture, and has numerous black veins. The sedimentation of everything in the water over many years has created the surfaces of the ocean's depths. Nautilus quartz agglomerate slabs have a warm, vivid colour and a fine grain of darker flecks and unexpected flashes of light. Quartz stones do not require high maintenance but proper care and maintenance should be given to the engineered stone to look striking