Unlike granite and marble, quartz slabs are not directly quarried from the earth, but rather undergo an engineering process. Consisting of 90% natural quartz and 7% resin, quartz countertops require very low maintenance, durable and are optimal for areas of high use. Because the slab formulation process is done by man, colors are carefully crafted to fit every interior design in mind, ranging from solid colors to imitations of natural stone and marble. Slab patterns and coloration remain consistent from slab to slab. Material manufactures include Cambria, LG Viatera, Caesarstone and Silestone.