Silestone® is 94% pure natural quartz and is manufactured by the world’s leading producer of quartz surfaces for high-quality kitchens and bathrooms. Silestone is Stain Resistant, Acid Resistant, Scratch Resistant, Impact Resistant and uses a new technology (silver ions) to keep bacteria from growing. Silestone offers a 15-year ertified warranty. There are 25 edge options and all products are NSF and Greenguard Certified.