GR Stone is an authorized dealer of Hanstone Quartz. HanStone Quartz is a high-performing quartz surface that is luxurious, durable, low maintenance surface product. Hanstone Quartz is available in 60 patterns, is non-porous, requires no sealing, requires no conditioning or polishing. Heat, bacteria and stain resistant, Chip and scratch-resistant, and comes with a Lifetime Limited Warranty. Hanstone is GREENGUARD certified®. Please come see all of the Hanstone Quartz colors in our Kenilworth, NJ countertop showroom.