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®. Graniteworks, Austin Texas, offers the complete line of Hanstone Quartz Countertops.