Caesarstone® is composed of 93% natural quartz, one of nature's strongest minerals, Caesarstone® is resistant to stains, scratches, most household chemicals and moderate heat. Our firm dedication to quality has earned us ISO 9001 certification. A high style, low maintenance product, Caesarstone® never needs sealing, and its hard, nonporous surface makes cleaning simple. In most cases, soap and water or a mild detergent are all that are required to keep your countertop looking like new.
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in section "Materials feldspar and quartz-feldspar"