Quartz is an engineered Stone. It combines the beauty of natural stone with the functional benefits of solid surface materials and it's sold under various brand names. It is a nonporous surface that resists scratches and stains. It is easy to maintain, no sealant is required. The surfaces are very uniform and homogenous, the sample you see in the showroom is what you'll get in your kitchen. This predictability is favored by some customers but if you are looking for an original, natural look, consider granite. Quartz does not offer the heat resistance of natural stones, and if damaged it cannot be repaired.