Houzer Quartztone Granite Collection features a substantially improved properties with cutting-edge workmanship and material properties. Available in multiple colors to accommodate any kitchen color scheme, the Quartztone Granite is three times harder than natural granite, 100% pore-free sealed surface, resistant to aggressive chemicals and capable of working under extreme pressure. Easy to maintain, these Quartztone Granite sinks are UV-stable, food grade, extremely tough and scratch resistant with natural, antibacterial hygiene protection system.