The New Natural Stone Choice. Cambria manufactures quartz surfaces of exceptional quality for countertops, vanities, floors and other surfacing applications. Cambria is the exclusive manufacturer of quartz surfaces in the United States. Cambria - 93% pure natural quartz crystals with a diamond-like hardness - provides extraordinary strength and durability. With an array of dazzling color choices, it`s just natural to move on to better things, like quartz.