Natural QuartzQuartz is one of the hardest minerals found in nature, so it's a fitting material for the busiest space in the home: the kitchen. Quartz countertops are made from crushed pure natural quartz combined with a small amount of pigment and resin. This combination of materials allows quartz to be a dense, nonporous stone that is both scratch and stain resistant with no sealing required.However, says kitchen and bath designer Gary Lichlyter, "you really can't tell the difference [in terms of surface gloss and sheen] between a sealed and nonsealed quartz countertop. Sealing takes just a few minutes but can really help protect your quartz surface for long-term use, so I highly recommend it." Cambria quartz boasts of the most simple maintenance regimen: Wash the surface with a soft cotton cloth and warm water with a mild dish soap. According to the company website, "Cambria is durable and more resistant to surface damage than other stone. However, all stone can be damaged by force and no stone is chip-proof. Objects hitting edges particularly at sinks or dishwashers may cause chips."Remember, natural stone surfaces like quartz can also be damaged by sudden and rapid changes of temperature as well as direct contact with hot pots and pans. Always use a potholder to protect the natural quartz surface.For tough stains: Quartz countertops are meant to be stain free, as the surface does not absorb liquids. Stay away from: Bleach and abrasive products.