Quick view QuartzShield (1 Liter) Tenax $59.00 QUARTZ SHIELD Quartz Shield Water Based Water and Oil Repellent for Quartz and Engineered Stone. For polished, honed and brushed Surfaces. Using high quality cleaning products, sealers, and other surface treatments is simple. Knowing some basic... Out of stock! Please check back soon, or contact us to backorder.